Updated on 2024/12/02

Information

 

写真a

 
YOO SUNGJUN
 
Organization
Kyushu University Platform of Inter/Transdisciplinary Energy Research Associate Professor
Graduate School of Human-Environment Studies Department of Architecture(Concurrent)
Title
Associate Professor
Contact information
メールアドレス
Tel
0928026895
Profile
室内の空気・熱環境形成と生体反応は密接な関係があり,健康・快適で且つ生産性の高い室内環境を創造するためには,室内環境要素と人体の相互関係を総合的に予測・評価することが必須となります.熱・空気環境に代表される室内環境の質(IEQ)と人体影響を高い精度で予測することは工学的に重要な課題でありますが,特に設計段階において被験者を用いて実験を行うことは費用や時間の観点でほぼ不可能であり,また倫理的な問題より一般的な環境条件を大きく逸脱した環境下での実験は禁止されています.この点で,本研究室では室内環境解析用数値人体モデル(Computer Simulated Person)に着目し,室内環境質を総合的かつ高精度に予測・評価することを目指しています.
External link

Degree

  • Ph.D.

Research Interests・Research Keywords

  • Research theme:Development of HVAC control method using comprehensive computer simulated person(CSP) as a sensor

    Keyword:CSP, CFD, Indoor Environmental Quality, Health Risk Assessment

    Research period: 2017.4 - 2019.3

  • Research theme:Development of comprehensive computer simulated person(CSP) for estimation of indoor environmental quality

    Keyword:Indoor environmental quality assessment, Indoor air quality, Indoor thermal environment, Computer simulated person

    Research period: 2013.4

Awards

  • 空気調和・衛生工学会 論文賞(学術論文部門)

    2022.3   空気調和・衛生工学会   業績名:数値解析による換気用全熱交換エレメントの性能評価 第1報―小型全熱交換エレメントを対象とした基礎実験と熱水分移動解析(No.256) 第2 報―CFD と熱水分移動解析モデルの連成解析を適用した小型全熱交換エレメントの解析と流路設計への展開 (No.271) 第3 報―全熱交換エレメントを対象とした臭気物質の交換効率測定と臭気物質移動モデルの提案(No.274) 受賞者: 外川 一、亀石 圭司、伊藤 一秀、鄭 朱娟、劉 城準

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    外気を室内導入する際に発生する換気負荷は主要な空調負荷の一つであり,省エネルギーの観点では導入量の最適化と適切な処理の必要性が指摘されている.本研究では,全熱交換形換気システムに採用される全熱交換エレメントに着目し,そのエレメント内での顕熱・潜熱移動を詳細にモデル化し,簡易型ならびに詳細型の数値解析法を開発する.その上で,全熱交換エレメントの性能改善に寄与する要素をパラメトリ ック解析によって明らかにすることを目的とする.

  • 室内環境学会学術大会 大会長奨励賞

    2021.12   室内環境学会   演題:作業者の作業位置・姿勢の影響を考慮したドラフトチャンバーの捕集性能評価 著者:牟田諒太,鄭朱娟,劉城準,伊藤一秀

  • 室内環境学会学術大会 優秀学生賞

    2021.12   室内環境学会   演題:化学ポテンシャル表記に基づく衣服内熱水分同時輸送モデルと3次元着衣を再現した数値人体モデルの連成解析 著者:室田圭,劉城準,伊藤一秀

  • 2018 SAGE Best Paper Award

    2019.6   Indoor and Built Environment  

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    Indoor environmental quality, e.g. air quality and thermal environments, has a potential impact on residents in indoors. Development of a computer simulated person (CSP) for indoor computational fluid dynamics (CFD) simulation can contribute to the improvement of design and prediction method
    regarding the interaction between indoor air/thermal environmental factors and human responses. In this study, a CSP integrated with a virtual airway was developed and used to estimate inhalation exposure in an indoor environment. The virtual airway is a numerical respiratory tract model for CFD
    simulation that reproduces detailed geometry from the nasal/oral cavity to the bronchial tubes by way of the trachea. Physiologically based pharmacokinetic (PBPK)-CFD hybrid analysis is also integrated into the CSP. Through the coupled simulation of PBPK-CFD-CSP analysis, inhalation exposure under steady state conditions where formaldehyde was emitted from floor material was analysed and respiratory tissue doses and their distributions of inhaled contaminants are discussed quantitatively.

  • 室内環境学会大会 大会長奨励賞

    2017.12   一般社団法人 室内環境学会   室内環境の総合評価を可能とする数値人体モデルの開発における最新の研究成果を報告し,優れた発表と評価され,大会長奨励賞を受賞した.

  • IAQVEC 2016 Best Paper Award

    2016.10   IAQVEC 2016  

  • 日本建築学会大会学術講演会 環境工学委員会 若手優秀発表賞

    2015.10   日本建築学会 環境工学委員会  

  • 空気調和・衛生工学会 九州支部長賞

    2014.5  

  • 大韓建築学会 優秀卒業論文展 優秀賞

    2013.2   大韓建築学会長  

  • 嶺南大学建築学部卒業作品展(建築設計) 奨励賞

    2011.2   嶺南大学建築学部長  

  • 嶺南大学の栄光あるY型人材賞

    2011.2   韓国 嶺南大学総長  

  • 嶺南大学建築学部卒業作品展(論文) 優秀賞

    2011.2   大韓建築学会大邱慶北支会長  

  • GREEN LEADER養成プログラム 最優秀賞

    2011.1   韓国 環境部長官   大学キャンパスのサステナブル化のために韓国国内の各大学のチームが競争的に活動し,優れた成果の基に海外調査資金(100万円)を獲得した.

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Papers

  • Mathematical modeling of gas-phase mass transfer in hydrous materials for a total heat exchange ventilator

    Wang, X; Sotokawa, H; Gomyo, T; Yoo, SJ; Chung, J; Ito, K

    BUILDING AND ENVIRONMENT   267   2025.1   ISSN:0360-1323 eISSN:1873-684X

  • Numerical modeling of biophilic design incorporating large-scale waterfall into a public building: Combined simulation of heat, air, and water transfer

    Yang, XZ; Ozaki, A; Arima, Y; Choi, Y; Yoo, SJ

    BUILDING AND ENVIRONMENT   266   2024.12   ISSN:0360-1323 eISSN:1873-684X

  • Impact of human micro-movements on breathing zone and thermal plume formation

    Park, H; Yoo, SJ; Kuga, K; Sumiyoshi, E; Harashima, H; Ito, K

    BUILDING AND ENVIRONMENT   264   2024.10   ISSN:0360-1323 eISSN:1873-684X

  • Multi-layered ventilation duct system for heat exchange with air purification

    Wang, X; Wang, Q; Yoo, SJ; Gomyo, T; Sotokawa, H; Chung, JY; Kuga, K; Ito, K

    BUILDING AND ENVIRONMENT   262   2024.8   ISSN:0360-1323 eISSN:1873-684X

  • Toward occupant-centric system: Multicriteria optimization of hybrid displacement-personalized ventilation system using computational fluid dynamics with computer-simulated person

    Fernandez, KB; Yoo, SJ; Kuga, K; Ito, K

    BUILDING AND ENVIRONMENT   262   2024.8   ISSN:0360-1323 eISSN:1873-684X

  • Effect of crowd density, wind direction, and air temperature on the formation of individual human breathing zones in a semi-outdoor environment

    Abouelhamd, IMS; Kuga, K; Yoo, SJ; Ito, K

    SUSTAINABLE CITIES AND SOCIETY   103   2024.4   ISSN:2210-6707 eISSN:2210-6715

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    Publisher:Sustainable Cities and Society  

    This paper presents a comprehensive numerical investigation to predict the human breathing zones (BZs) in crowded semi-outdoor environments. The computational domain consisted of a nine-human block array with integrated nasal cavities subjected to the lower part of the atmospheric boundary layer. Five crowding levels, seven wind directions, and inflow ambient air temperatures (ranging from 10 to 31 °C) were tested to examine the horizontal and vertical formations of the BZs. Validation and verification tests were performed through comparisons with experimental results, a grid independence test, and an evaluation of various randomized distribution scenarios to minimize the uncertainties of the computational fluid dynamics analyses. The horizontal extension of the BZs tripled as the crowding level increased from 0.325 to 4.0 m2/capita. However, the lateral extension was insensitive and remained within 10 cm of the nostrils. Human models can inhale air close to the cheek, neck, and shoulders when an oblique flow is assumed. As the air temperature increased, individuals tended to inhale air from the upper regions, which was influenced by the interrelated thermal properties of the human body. Consequently, under high-temperature conditions, there may be an increased probability of gas-phase contaminant inhalation over greater horizontal distances.

    DOI: 10.1016/j.scs.2024.105274

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  • Integration of computer-simulated persons with multi-node thermoregulation model that considers the effect of clothing for skin surface temperature distribution analysis

    Park, H; Yoo, SJ; Seo, J; Eisaku, S; Hiroshi, H; Kuga, K; Ito, K

    BUILDING AND ENVIRONMENT   248   2024.1   ISSN:0360-1323 eISSN:1873-684X

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    Publisher:Building and Environment  

    There is a growing demand for more advanced and diverse computer-simulated persons (CSPs) to accurately evaluate the indoor environmental quality and analyze the human body interactions with environmental factors. This study aimed to develop a CSP targeting the ANDI thermal manikin, which regulates skin temperature and thermal functions through a multi-node thermoregulation model, that is, the development of a digital twin for the ANDI thermal manikin. Additionally, to ensure the prediction reliability of the numerical thermoregulation model applied to the CSP using computational fluid dynamics (CFD) analysis, the CFD results were compared with those from the chamber experiment using an ANDI thermal manikin. We conducted integrated analyses of the CSP using the Fiala thermoregulation model to calculate the metabolic heat production, at transfer between different layers and sections, and skin surface temperature. The CFD analysis was performed using the CSP under the same environmental conditions as those used in the experiment. The CSP analysis results reproduced the experimental results obtained using the thermal manikin in the thermal comfort evaluation with acceptable accuracy, and the root mean square deviation of the predicted mean skin temperature was approximately 0.195. Furthermore, the importance of detailed clothing geometry was highlighted by confirming that the thickness of the ventilation layer between the skin and clothing has a significant effect on the thermal performance. The comprehensive prediction method for indoor environments based on the advanced CSP developed in this study can contribute to human-centered indoor environmental planning through parametric analyses under various environmental scenarios.

    DOI: 10.1016/j.buildenv.2023.111105

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  • Integration of computer-simulated persons with multi-node thermoregulation model that considers the effect of clothing for skin surface temperature distribution analysis Reviewed International journal

    Hyun-Gyu Park, Sung-Jun Yoo, Eisaku Sumiyoshi, Hiroshi Harashima, Kazuki Kuga, Kazuhide Ito

    Building and Environment   2024.1

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Numerical Study of Indoor Oil Mist Particle Concentration Distribution in an Industrial Factory Using the Eulerian-Eulerian and Eulerian-Lagrangian Methods

    Wang, YK; Sun, JN; Zhao, M; Murga, A; Yoo, SJ; Ito, K; Long, ZW

    FLUIDS   8 ( 10 )   2023.10   eISSN:2311-5521

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    Publisher:Fluids  

    The transport and prediction of the concentration of particles in confined spaces are crucial for human well-being; this has become particularly evident during the current worldwide pandemic. Computational fluid dynamics (CFD) has been widely used for such predictions, relying on Eulerian–Eulerian (EE) and Eulerian–Lagrangian (EL) models to study particle flow. However, there is a lack of research on industrial factories. In this study, a scaled laboratory in an industrial factory was established for oil mist particles in a machining factory, and oil mist dispersion experiments were conducted under roof exhaust and mixed ventilation conditions. After that, the oil mist concentration distribution in the factory under the same working conditions was calculated by Eulerian and Lagrangian methods, and the corresponding calculation errors and resource consumption were compared. It was found that the simulation results of both methods are acceptable for mixed ventilation and roof exhaust ventilation systems. When there are more vortices in the factory, the Lagrangian method increases the computation time by more than 53% to satisfy the computational accuracy, and the computational error between the Eulerian and Lagrangian methods becomes about 10% larger. For oil mist particles with an aerodynamic diameter of 0.5 μm, both Eulerian and Lagrangian methods have reliable accuracy. Based on the same flow field, the Lagrangian method consumes more than 400 times more computational resources than the Eulerian method. This study can provide a reference for the simulation of indoor particulate transport in industrial factories.

    DOI: 10.3390/fluids8100264

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  • Identification of probabilistic size of breathing zone during single inhalation phase in semi-outdoor environmental scenarios

    Abouelhamd, I; Kuga, K; Yoo, SJ; Ito, K

    BUILDING AND ENVIRONMENT   243   2023.9   ISSN:0360-1323 eISSN:1873-684X

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    Publisher:Building and Environment  

    This study investigates outdoor public health by predicting the airflow fields and probabilistic size of breathing zones. Computational fluid dynamics (CFD) simulations were performed in a simplified semi-outdoor domain, utilizing a validated computer-simulated person (CSP) with an integrated nasal cavity. The simulations were conducted for eight wind orientations (0°, 90°, 180°, 270°, 45°, 135°, 225°, and 315°), four wind velocities (Uref = 0.25, 0.5, 0.75, and 1.0 m/s), and one inhalation flow rate (18.7 L/min), considering both steady and transient conditions. The RANS-based equations were solved using the SST k-omega turbulence model. Breathing zones were computed and visualized using the scale for ventilation efficiency 5 (SVE5) and reverse time-traced vector techniques. The results indicated that wind orientation influenced the air velocity, temperature, and breathing zone distribution. The steady-state condition tended to overestimate breathing zones, whereas, under transient conditions, they assumed a semi-cylindrical form that extended horizontally, with a slight slope from the nostrils towards the direction of the wind source. The horizontal extension of the breathing regions increased at high wind speeds and with a smaller cylinder radius compared to calm conditions. Eventually, this study proposed new definitions of the breathing zone in the semi-outdoor environment in different SVE5 values. These findings can contribute to air quality management and aid in assessing the probability of airborne transmission in public spaces.

    DOI: 10.1016/j.buildenv.2023.110672

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  • Identification of Probabilistic Size of Breathing Zone during Single Inhalation Phase in Semi-Outdoor Environmental Scenarios Reviewed International journal

    Islam Abouelhamd, Kazuki Kuga, Sung-jun Yoo, Kazuhide Ito

    Building and Environment   2023.9

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Computational Fluid and Particle Dynamics Analyses for Prediction of Airborne Infection/Spread Risks in Highway Buses: A Parametric Study Reviewed International journal

    Sung-jun Yoo, Shori Yamauchi, Hyun-Gyu Park, Kazuhide Ito

    Fluids   2023.9

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Numerical Study of Indoor Oil-mist Particle Concentration Distribution in Industrial Factory using the Eulerian-Eulerian and Eulerian-Lagrangian Methods Reviewed International journal

    Yukun Wang, Jingnan Sun, Meng Zhao, Alicia Murga, Sung-Jun Yoo, Kazuhide Ito, Zhengwei Long

    Fluids   2023.9

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  • Spatial distributions of airborne transmission risk on commuter buses: Numerical case study using computational fluid and particle dynamics with computer-simulated persons

    Yoo, SJ; Kurokawa, A; Matsunaga, K; Ito, K

    EXPERIMENTAL AND COMPUTATIONAL MULTIPHASE FLOW   5 ( 3 )   304 - 318   2023.9   ISSN:2661-8869 eISSN:2661-8877

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    Language:English   Publisher:Experimental and Computational Multiphase Flow  

    Commuter buses have a high passenger density relative to the interior cabin volume, and it is difficult to maintain a physical/social distance in terms of airborne transmission control. Therefore, it is important to quantitatively investigate the impact of ventilation and air-conditioning in the cabin on the airborne transmission risk for passengers. In this study, comprehensive coupled numerical simulations using computational fluid and particle dynamics (CFPD) and computer-simulated persons (CSPs) were performed to investigate the heterogeneous spatial distribution of the airborne transmission risk in a commuter bus environment under two types of layouts of the ventilation system and two types of passenger densities. Through a series of particle transmission analysis and infection risk assessment in this study, it was revealed that the layout of the supply inlet/exhaust outlet openings of a heating, ventilation, and air-conditioning (HVAC) system has a significant impact on the particle dispersion characteristics inside the bus cabin, and higher infection risks were observed near the single exhaust outlet in the case of higher passenger density. The integrated analysis of CFPD and CSPs in a commuter bus cabin revealed that the airborne transmission risk formed significant heterogeneous spatial distributions, and the changes in air-conditioning conditions had a certain impact on the risk.

    DOI: 10.1007/s42757-022-0146-6

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  • Computational Fluid and Particle Dynamics Analyses for Prediction of Airborne Infection/Spread Risks in Highway Buses: A Parametric Study

    Yoo, SJ; Yamauchi, S; Park, H; Ito, K

    FLUIDS   8 ( 9 )   2023.9   eISSN:2311-5521

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    Publisher:Fluids  

    Highway buses are used in a wide range of commuting services and in the tourist industry. The demand for highway bus transportation has dramatically increased in the recent post-pandemic world, and airborne transmission risks may increase alongside the demand for highway buses, owing to a higher passenger density in bus cabins. We developed a numerical prediction method for the spatial distribution of airborne transmission risks inside bus cabins. For a computational fluid dynamics analyses, targeting two types of bus cabins, sophisticated geometries of bus cabins with realistic heating, ventilation, and air-conditioning were reproduced. The passengers in bus cabins were reproduced using computer-simulated persons. Airflow, heat, and moisture transfer analysis were conducted based on computational fluid dynamics, to predict the microclimate around passengers and the interaction between the cabin climate and passengers. Finally, droplet dispersion analysis using the Eulerian–Lagrangian method and an investigation of the spatial distribution of infection/spread risks, assuming SARS-CoV-2 infection, were performed. Through parametric analyses of passive and individual countermeasures to reduce airborne infection risks, the effectiveness of countermeasures for airborne infection was discussed. Partition installation as a passive countermeasure had an impact on the human microclimate, which decreased infection risks. The individual countermeasure, mask-wearing, almost completely prevented airborne infection.

    DOI: 10.3390/fluids8090253

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  • Investigation of the impact of the detailed clothing modelling on the human thermal comfort based on multi-node thermoregulatory analyses using computer-simulated person Reviewed International journal

    Hyun-Gyu Park, Sung-Jun Yoo, Eisaku Sumiyoshi, Hiroshi Harashima, Kazuhide Ito

    Healthy Building 2023 Asia Pacific   2023.7

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • Exploratory computational fluid and particle dynamics analyses in multi-layered vertical duct-type ventilation system for heat exchange and air purification

    Qi W., Sung-Jun Y., Xin W., Kazuhide I.

    E3S Web of Conferences   396   2023.6   ISSN:25550403

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    Publisher:E3S Web of Conferences  

    This study aims to develop a vertical air duct which is embedded inside the building envelop. It is also designed as a counter-flow heat recovery ventilator (HRV). The vertical air duct model in this study adopted baffle structure considering two methods to suppress the inflow of the particulate matters from outdoor: 1) trapping by wall surface and airflow structure and 2) gravitational sedimentation in the air duct. Design parametric analyses are conducted using computational fluid dynamics to determine optimal design of vertical air duct. Three types of analytical case with various set-up of baffles inside air passages are prepared, and heat exchange efficiency is estimated by heat transfer analysis inside ventilator. In addition, particulate pollutants' behaviour inside air passages is predicted based on Euler-Lagrange particle transport analysis. Through the series of numerical analysis, differences in heat exchange efficiency and effectiveness of particulate pollutant removal corresponding to different baffle design are quantitatively discussed, and finally optimal design for air passages in HRV is determined. The building-integrated HRV introduced in this study could contribute to sustainable design of building environment.

    DOI: 10.1051/e3sconf/202339603006

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  • Numerical Thermal Comfort Analysis Using Combined Computer-Simulated Person with Clothing and Multi Node Thermoregulation Model Reviewed International journal

    Park Hyun-Gyu, Yoo Sung-Jun, Sumiyoshi Eisaku, Harashima Hiroshi, Ito Kazuhide.

    IAQVEC 2023   2023.6

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • Numerical prediction of particle breathing zone in a semi-outdoor environment Reviewed International journal

    Islam Abouelhamd, Sung-jun Yoo, Kazuki Kuga, and Kazuhide ito

    ICNAA 2023   2023.6

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • Impact of indoor ventilation efficiency on acetone inhalation exposure concentration and tissue dose in respiratory tract

    Li, C; Yoo, SJ; Ito, K

    BUILDING SIMULATION   16 ( 3 )   427 - 441   2023.3   ISSN:1996-3599 eISSN:1996-8744

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    Publisher:Building Simulation  

    A significant feature of the indoor environment is the heterogeneity of airflow and pollutant distributions, which are primarily dependent on ventilation systems. In the case of short- and high-concentration exposures to hazardous chemical pollutants, it may be necessary to precisely determine the concentration in the breathing zone or, more directly, the inhalation exposure concentration in the respiratory tract, rather than the representative room average concentration in an indoor environment, because of the non-uniformity of pollutant concentration distributions. In this study, we developed a computer-simulated person with a detailed respiratory system to predict inhalation exposure concentration and inhalation dose via transient breathing and reported a demonstrative numerical simulation for analyzing acetone concentration distributions in a simplified model room. Our numerical analysis revealed that the ventilation efficiency distribution in a room could change significantly by changing the design of the ventilation system, and that the inhalation exposure concentration estimated by a computer-simulated person could differ from the representative concentration, such as perfect-mixing or volume-averaged acetone concentration, by a factor of two or more.

    DOI: 10.1007/s12273-022-0954-4

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  • A numerical investigation of the acetone exposure concentration and local tissue dosimetry under various ventilation modes

    Li C., Zhang K., Yoo S.J., Ito K.

    Healthy Buildings 2023: Asia and Pacific Rim   2023   ISBN:9781713890850

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    Publisher:Healthy Buildings 2023: Asia and Pacific Rim  

    Acetone is an organic chemical solvent with widespread industrial applications. Inhaling a lot of acetone in a short time or long-term exposure to acetone may have severe effects and permanent damage to human health. This study combined CFD and the physiologically based pharmacokinetic (PBPK) models, coupled with a computer-simulated person (CSP) embedded in the respiratory model, and conducted precise prediction of the transport pathway of acetone-containing air from indoor emission sources to the respiratory tract via inhalation and dermal absorption. A series of numerical methods for analyzing the acetone concentration in the nasal passages and acetone dermal adsorption to the local tissue cells were presented, coupled with the analysis of the acetone concentration distributions in a simple room model as functions of typical ventilation modes. It is believed that the numerical method proposed in this study would provide a feasible prediction method and risk assessment for acetone applications.

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  • Multi-stage coupling of material flow analysis and indoor computational fluid dynamics for personal DEHP exposure concentration analysis Reviewed International journal

    Ryota Muta, Sung-Jun Yoo, Hyuntae Kim, T Matsumoto, Kazuhide Ito

    Indoor and Built Environment   2022.11

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Multiscale analysis of material flow and computational fluid dynamics for predicting individual diethyl-hexyl phthalate exposure concentration in indoors

    Muta, R; Yoo, SJ; Kim, H; Matsumoto, T; Ito, K

    INDOOR AND BUILT ENVIRONMENT   31 ( 9 )   2291 - 2311   2022.11   ISSN:1420-326X eISSN:1423-0070

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    Publisher:Indoor and Built Environment  

    The establishment of a healthy indoor environment requires the accurate evaluation of an individual’s exposure to pollutants. The concentration of indoor chemical pollutants is a representative indicator for such evaluation and is generally measured on-site. Moreover, material flow analysis (MFA), using macroscopic statistical data, is a reasonable method for objectively evaluating pollution on a wide scale; however, no effective strategy exists for the prediction of indoor air pollution, nor for the assessment of an individual’s exposure from social stock data. Accordingly, we developed a novel integration method comprising MFA and computational fluid dynamics (CFD) with a computer-simulated person (CSP) to establish a framework for evaluating indoor pollutant concentration and individual exposure of residents. We focused on diethyl-hexyl phthalate (DEHP) and first estimated the amount of DEHP-containing product accumulation in Japan by MFA. Second, we conducted a thorough survey and measurement of DEHP emission rates. Using these results as boundary conditions for indoor CFD with CSP, the individual exposure of a resident, in a standard residential house, was quantitatively evaluated. The total daily exposure per unit of body weight was estimated to be more than 100 (μg/kg/d) in the worst-case scenario which was considered the upper limit for exposure in this analysis.

    DOI: 10.1177/1420326X221092613

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  • Indoor Thermal Comfort Assessment Using CFD-CSP Hybrid Analysis Reviewed International journal

    Hyun-Gyu Park, Sung-Jun Yoo, Eisaku Sumiyoshi, Hiroshi Harashima Kazuhide Ito

    ACFD 2022   2022.10

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • Three-Dimensional Modeling and Computational Fluid Dynamics Analysis for Ventilation in Clothing Reviewed International journal

    Sena Hyodo, Sung-Jun Yoo Kazuhide Ito

    ACFD 2022   2022.10

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  • Validation, verification, and quality control of computational fluid dynamics analysis for indoor environments using a computer-simulated person with respiratory tract

    Yoo, SJ; Ito, K

    JAPAN ARCHITECTURAL REVIEW   5 ( 4 )   714 - 727   2022.10   ISSN:2475-8876

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    Publisher:Japan Architectural Review  

    Computer-simulated persons (CSPs) with respiratory systems have been developed for microclimate analysis around the human body and inhalation exposure analysis, for detailed assessment of comfort and health risks in indoor spaces. This study examined and validated the prediction accuracy of a CSP, for precise estimation of indoor environmental quality (IEQ). The flow-field prediction accuracy was thoroughly examined in a grid analysis using the CSP and a thermal manikin for benchmarking. The model incorporated unsteady breathing and human postural sway, and assessed their impact on the microclimate around the human body. The numerically estimated flow field was validated using experimental particle image velocimetry (PIV) data, with a detailed grid independence test. Considering the practical use of the respiratory tract model for the inhalation exposure risk assessment, the prediction accuracy of particle transport and deposition analysis was examined using previously published in vivo experimental results. This analysis revealed that the impact of transient breathing and body vibrations on the reproduction of the thermal plume around the human body is quite weak; consequently, these conditions can be ignored from the macroscopic perspective of indoor airflow analysis.

    DOI: 10.1002/2475-8876.12301

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  • Error analysis of human inhalation exposure simulation in industrial workshop

    Wang, YK; Shen, X; Yoo, SJ; Long, ZW; Ito, K

    BUILDING AND ENVIRONMENT   224   2022.10   ISSN:0360-1323 eISSN:1873-684X

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    Publisher:Building and Environment  

    The evaluation of inhalation exposure of workers in industrial production environments is significant. Current studies on inhalation exposure in industrial workshops are quite limited and lack experimental data validation. This study established a scaled experimental cabin and performed inhalation exposure experiments. Subsequently, the validated numerical model was used to study the influences of different factors on human inhalation exposure prediction. The factors emphasize the meshing strategy, the manikin geometry and the thermal plume of the manikin. The results show that the polyhedron grid offers a greater advantage and that the required grids and computing time represent only 20% and 33% of the tetrahedral grid. CFD results are more consistent with human inhalation exposure experimental results when a 5% mean computational error is used as a criterion to verify grid independence. The inhalation exposure computational results of different manikin models differed by only about 2%. And compared with the 3D scanned model, the humanlike multi-box and single cuboid models are easier to build and consume fewer resources. Therefore, using humanlike multi-box and single cuboid models to compute human inhalation exposure in the industrial workshop is more recommended. The Ri number evaluates the intensity of the human thermal plume. The computational errors between the isothermal and thermal manikin models are 1.76%, 5.14%, 9.18%, and 14.95% for inhalation exposures with 20, 15, 10 and 5 ACH (air changes per hour), respectively, and the corresponding Ri numbers are 0.09, 0.16, 0.34, and 1.41.The computational error between the isothermal and thermal manikin models is less than 10% when the ACH is larger than 10. This study can provide a reference for the prediction of inhalation exposure of workers in industrial workshops.

    DOI: 10.1016/j.buildenv.2022.109573

    Web of Science

    Scopus

  • Development of three-dimentional clothing model for computer simulated person integrated with thermoregulation model Reviewed International journal

    Sena Hyodo, Kei Murota, Sung-Jun Yoo, K and Kazuhide Ito

    Roomvent 2022   2022.9

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  • Pollutant capture efficiencies in and around the opening surface of a fume hood under realistic conditions

    Muta, R; Chung, J; Li, C; Yoo, SJ; Ito, K

    INDOOR AND BUILT ENVIRONMENT   31 ( 6 )   1636 - 1653   2022.7   ISSN:1420-326X eISSN:1423-0070

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    Publisher:Indoor and Built Environment  

    Fume hoods are an indispensable instrument for experimental operations dealing with hazardous chemicals, wherein safety operations are strictly adherent to regulations. Within this context, few cases exist wherein the ventilation efficiency and pollutant capture efficiency inside fume hoods are precisely analyzed and quantitatively visualized. In this study, the pollutant capture efficiencies of a fume hood were analyzed by computational fluid dynamics as functions of exhaust airflow rate and according to the posture of workers in front of the fume hood. The indices for ventilation efficiencies, that is, age of air (SVE3), net escape velocity (NEV), and local purging flow rate (L-PFR), were adopted to quantitatively evaluate the pollutant concentration distributions formed inside the fume hood. NEV analysis revealed that the presence of a worker at the front of the fume hood did not significantly affect the pollutant capture efficiency at the opening surface of the fume hood. Changing the exhaust airflow rate resulted in changes in the size of the circulation flow formed in the upper part of the chamber. The circulation flow was found to have a dominant effect on the distribution of SVE3 and on the formation of the pollutant concentration distribution in the chamber.

    DOI: 10.1177/1420326X211066538

    Web of Science

    Scopus

  • Hygro-thermo-chemical transfer analysis of clothing microclimate using three-dimensional digital clothing model and computer-simulated person

    Murota, K; Kang, YJ; Hyodo, S; Yoo, SJ; Takenouchi, K; Tanabe, S; Ito, K

    INDOOR AND BUILT ENVIRONMENT   31 ( 6 )   1493 - 1510   2022.7   ISSN:1420-326X eISSN:1423-0070

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    Publisher:Indoor and Built Environment  

    Several studies regarding indoor environmental quality assessments based on computational human models have been reported. Recently, various computer-simulated persons for computational fluid dynamics (CFD) simulations that reproduce a detailed human body geometry has been developed. However, clothing is usually treated with simplification as a resistance to heat/contaminant transfer, and detailed hygro-thermo-chemical transfer phenomena in clothing-centred area with complex geometry have not been fully discussed. It is also important to investigate the ventilation characteristics inside the air gap between the clothing and the human body. Thus, this study aimed to develop an analytical method of three-dimensional clothing model that can be applied to a computer-simulated person (CSP) for indoor computational fluid dynamics analysis. To identify the impact of the clothing model on the human and the microclimate around the body, hygro-thermo-chemical transfer analyses were conducted in a virtual simplified model room. By reproducing the detailed clothing geometry, ventilation inside the air gap and clothing-centred hygro-thermo-chemical transfer characteristics were quantitatively investigated. The data analysis technique established in this study could contribute to preparing foundational data for simplification of numerical modelling of clothing.

    DOI: 10.1177/1420326X211059449

    Web of Science

    Scopus

  • Hybrid emergency ventilation system for controlling inhaled contaminant dose in the case of chemical leakage

    Ichimiya, S; Murga, A; Yoo, SJ; Sumiyoshi, E; Harashima, H; Long, ZW; Ito, K

    INDOOR AND BUILT ENVIRONMENT   31 ( 3 )   696 - 709   2022.3   ISSN:1420-326X eISSN:1423-0070

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    Publisher:Indoor and Built Environment  

    In factories where high-risk chemical pollutants are treated, it is essential to anticipate response measures in the event of chemical pollutant leakage to minimize adverse health effects on workers. When high-risk liquid chemical pollutants are assumed to be leaked inside enclosed spaces, it becomes crucial to predict the non-uniform concentration distributions in enclosed spaces and evaluate the health impacts and risks of short-time exposure to prevent large-scale accidents. Therefore, we have developed an emergency ventilation system for controlling the inhaled contaminant dose of factory workers. In this study, assuming a worst-case scenario liquid chemical pollutant leak in an enclosed factory space, the advantages and performance of a hybrid ventilation system that combines displacement and push–pull type ventilation systems were numerically investigated. Installation of wall materials that facilitate photocatalytic oxidation (PCO) reactions for background passive concentration control was also discussed. Based on the demonstrative numerical analyses for a realistic factory space, push–pull type ventilation system was confirmed to effectively suppress chemical pollutant diffusion in enclosed spaces with a low ventilation rate. Wall materials with the PCO mechanism had a certain contribution to the control of peak concentration.

    DOI: 10.1177/1420326X211026360

    Web of Science

    Scopus

  • Computational Fluid Dynamuics analysis of flow and airborne particle dispersion in a transit bus cabin Reviewed International journal

    Akira Kurokawa, Shori Yamauchi, Sung-Jun Yoo, Kazuhide Ito

    Healthy Building America 2021   2022.1

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  • Thermal comfort analysis coupled with computational fluid dynamics using computer simulated person Reviewed International journal

    Mengchen Ma, Sung-Jun Yoo, Kazuhide Ito

    Healthy Building America 2021   2022.1

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  • Realistic Three-Dimensional Modeling of Clothing and Heat and Mass Transfer Analysis using Computational Fluid Dynamics Part 2 Clothing-Centered Hygrothermal-Chemical Transfer Analysis Reviewed International journal

    Kei Murota, Sena Hyodo, Yujin Kang, Sung-Jun Yoo, Kazuki Takenouchi, Shin-ichi Tanabe, Kazuhide Ito.

    Healthy Building America 2021   2022.1

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  • Realistic Three-Dimensional Modeling of Clothing and Heat and Mass Transfer Analysis using Computational Fluid Dynamics Part 1 Development of Detailed 3D Clothing Model and Air Flow Analysis Reviewed International journal

    Sena Hyodo, Kei Murota, Yujin Kang, Sung-Jun Yoo, Kazuki Takenouchi, Shin-ichi Tanabe, Kazuhide Ito.

    Healthy Building America 2021   2022.1

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  • 実使用条件を想定したドラフトチャンバーの捕集性能評価 第2報 ドラフトチャンバー内に形成される換気効率分布の詳細解析 Reviewed

    牟田諒太,鄭朱娟,劉城準,伊藤一秀

    空気調和衛生工学会論文集   281   19 - 26   2021.9

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  • Downscaling from material flow analysis to indoor CFD for health risk assessment associated with DEHP exposure Reviewed International journal

    Ryota Muta, Sung-Jun Yoo, Hyuntae Kim, Toru Matsumoto, Kazuhide Ito

    Healthy Building Europe 2021   2021.6

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  • Correlation between formaldehyde emission characteristics in enclosed desiccators with five different geometries Reviewed International journal

    Yujin Kang, SJ Yoo, Kazuhide Ito

    Indoor and Built Environment   294   1 - 10   2021.4

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    DOI: https://doi.org/10.1177/1420326X20908918

  • Inhalation Airflow and Ventilation Efficiency in Subject-Specific Human Upper Airways Reviewed International journal

    Chang Xu, ND Khoa, SJ Yoo, X Zheng, S Shen, Kazuhide Ito

    Respiratory Physiology and Neurobiology   2021.3

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  • Experimental study of oil mist characteristics generated from minimum quantity lubrication and flood cooling Reviewed International journal

    Yiwen Wang, Alicia Murga, Zhengwei Long, Sung-Jun Yoo, and Kazuhide Ito

    Energy and Built Environment   2021.1

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  • 過酸化水素を用いた使用済みN95マスクの大規模除染方法 第1報 数値解析によるコンテナを利用した除染方法の基礎検討 Reviewed

    牟田諒太,劉城準,熊谷一清,伊藤一秀

    空気調和衛生工学会論文集   30 ( 4 )   565 - 577   2021.1

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  • Performance Evaluation of Heat Exchange Element by Numerical Model Reviewed International journal

    Juyeon Chung, Hajime Sotokawa, Sung-Jun Yoo and Kazuhide Ito

    Indoor Air 2020   2020.11

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  • Flow and Hygrothermal Transfer Analysis in Three Dimensional Clothing Model integrated with Computer Simulate Person Reviewed International journal

    Murota Kei, Yujin Kang, Kazuki Kuga, Sung-Jun Yoo, K Takenouchi, S Tanabe and Kazuhide Ito

    Indoor Air 2020   2020.11

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  • Three Dimensional Clothing Model integrated with Computer Simulate Person for Computational Fluid Dynamics Simulation Reviewed International journal

    Yujin Kang, Murota Kei, Kazuki Kuga, Sung-Jun Yoo, K Takenouchi, S Tanabe and Kazuhide Ito

    Indoor Air 2020   2020.11

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  • Inhalation exposure risk assessment associated with inappropriate use of fume hood Reviewed International journal

    Ryota Muta, Sung-Jun Yoo, Kazuhide Ito

    Indoor Air 2020   2020.11

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  • Transient micro-climate formation around computer simulated person in Personalized Work Environment Reviewed International journal

    Sung-Jun Yoo, Chong Wang, S Tanabe, Kazuhide Ito

    Indoor Air 2020   2020.11

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  • Investigation of transient and heterogeneous micro-climate around a human body in an enclosed personalized work environment Reviewed International journal

    Chong Wang, Sung-Jun Yoo, Shin-ichi Tanabe, and Kazuhide Ito

    Energy and Built Environment   2020.10

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  • 実使用条件を想定したドラフトチャンバーの捕集性能評価 第1報 不適切使用条件を想定した排気風量低下時のドラフトチャンバーの捕集性能評価 Reviewed

    牟田諒太,劉城準,伊藤一秀

    空気調和衛生工学会論文集   2020.8

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  • Decreasing inhaled contaminant dose of a factory worker through a hybrid Emergency Ventilation System: performance evaluation in worst-case scenario Reviewed International journal

    Alicia Murga, Z Long, S Yoo, E Sumiyoshi and Kazuhide Ito

    Energy and Built Environment   2020.7

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  • 数値解析による換気用全熱交換エレメントの性能評価 第3報 ― 全熱交換エレメントを対象とした臭気物質の交換効率測定と臭気物質移動モデルの提案 Reviewed

    外川一, Juyeon Chung, 劉城準, 伊藤一秀

    空気調和衛生工学会論文集   2020.1

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  • Correlation between formaldehyde emission characteristics in enclosed desiccators with five different geometries Reviewed International journal

    Yujin Kang, SJ Yoo, Kazuhide Ito

    Indoor and Built Environment   2020.1

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  • Distribution of transient formaldehyde concentration in confined small glass desiccators and its impact on emission rate measurement Reviewed International journal

    Yujin Kang, Sung-Jun Yoo, K Takenouchi, H Yoshida, S Tanabe, Kazuhide Ito

    Atmospheric Environment   2019.12

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  • Numerical sensitivity analyses for identifying rate-limiting factors influencing total energy exchange efficiency in energy recovery ventilator Reviewed International journal

    Hajime Sotokawa, Juyeon Chung, Sung-jung Yoo, and Kazuhide Ito

    Indoor and Built Environment   2019.11

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  • 数値解析による換気用全熱交換エレメントの性能評価 第2報 - CFDと熱水分移動解析モデルの連成解析を適用した小型全熱交換エレメントの解析と流路設計への展開 Reviewed

    Juyeon Chung, 外川一, Sung-Jun Yoo, 亀石圭司, 伊藤一秀

    空気調和衛生工学会論文集   2019.10

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  • Can inhalation exposure of specific worker in a cross-ventilated factory be evaluated by time and spatial-averaged contaminant concentration? Reviewed International journal

    Alicia Murga, Kazuki Kuga, Sung-Jun Yoo, and Kazuhide Ito

    Environmental Pollution   2019.9

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  • Control Factors of Formaldehyde Emission Rate from Building Materials in Airtight Small Glass Desiccator Reviewed International journal

    Yujin Kang, Sung-jun Yoo, Kazuhide Ito

    IAQVEC 2019   2019.9

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  • Development of Numerical Heat and Mass Transfer Model for Predicting Total Heat Exchange Performance in Energy Recovery Ventilator Reviewed International journal

    Hajime Sotokawa, Keiji Kameishi, Juyeon Chung, Sung-Jun Yoo, Kazuhide Ito

    IAQVEC 2019   2019.9

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  • Improvement of human thermoregulation model for in silico human by detail respiratory heat loss analysis Reviewed International journal

    Chong Wang, Sung-Jun Yoo, Kazuhide Ito

    ISHVAC 2019   2019.7

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  • Does detailed hygrothermal transport analysis in respiratory tract affect skin surface temperature distributions by thermoregulation model? Reviewed International journal

    Chong Wang, Sung-Jun Yoo and Kazuhide Ito

    Advances in Building Energy Research   2019.4

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  • Multi-stage optimization of local environmental quality by comprehensive computer simulated person as a sensor for HVAC control Reviewed International journal

    Sung-Jun Yoo, Kazuhide Ito

    Advances in Building Energy Research   2019.3

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  • 呼吸器系統合型数値人体モデルを用いた電子煙草(e-Cigarette)使用に伴う1次・2次暴露リスクの定量評価 Reviewed

    久我一喜,Sung-Jun Yoo,伊藤一秀

    日本建築学会環境系論文集   2018.12

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  • Multi-stage optimization of local environmental quality by comprehensive computer simulated person Reviewed International journal

    Sung-Jun Yoo and Kazuhide Ito

    ICEERB 2018   2018.11

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  • ホルムアルデヒド放散試験に適用可能性のある各種デシケーター幾何形状を対象とした等価拡散距離評価 Reviewed

    姜裕珍, 久間祐太郎, Sung-Jun Yoo, 竹之内和樹, 吉田仁美, 田辺新一, 伊藤一秀

    日本建築学会環境系論文集   2018.11

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  • First- and second-hand smoke exposure assessment from e-cigarettes using integrated numerical analysis of CFD and a computer-simulated person with a respiratory tract model Reviewed International journal

    Indoor and Built Environment   2018.8

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  • Assessment of transient inhalation exposure using in silico human model integrated with PBPK-CFD hybrid analysis Reviewed International journal

    Sung-Jun Yoo, Kazuhide Ito

    Sustainable Cities and Society   40   317 - 325   2018.7

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    DOI: https://doi.org/10.1016/j.scs.2018.04.023

  • Assessment of E-cigarette smoking using in silico human respiratory tract model integrated with coupled PBPK-CFD analysis Reviewed

    K Kuga, SJ Yoo, Kazuhide Ito, W Chen, P Wang, J Fowles, K Kumagai, D Shusterman

    Roomvent-Ventilation 2018   2018.6

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  • Integrated PBPK-CFD-CSP Analysis for Dermal Exposure Assessment in Indoor Environment Reviewed

    Hideaki Koyama, K Kuga, SJ Yoo, Kazuhide Ito

    Roomvent-Ventilation 2018   2018.6

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  • Impact of Hygrothermal Transfer Analysis in Numerical Respiratory Tract on Skin Surface Temperature Evaluation by Stolwijk Model Reviewed

    Chong Wang, Sung-Jun Yoo, Kazuhide Ito

    Roomvent-Ventilation 2018   2018.6

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  • Multi-stage downscaling procedure to analyze the impact of exposure concentration in a factory on a specific worker through CFD Reviewed International journal

    Alicia Murga, Sung-Jun Yoo and Kazuhide Ito

    Indoor and Built Environment   2018.4

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  • Quantitative risk assessment of transient inhalation exposure using PBPK-CFD hybrid model with computer simulated person Reviewed International journal

    Sung-Jun Yoo, Kazuhide Ito

    COBEE 2018   2018.2

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  • Transient analysis of inhalation exposure by using computer simulated person integrated with PBPK-CFD hybrid model Reviewed International journal

    Sung-Jun Yoo, Kazuhide Ito

    Healthy Buildings 2017 Asia   2017.9

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  • Virtual Bronchiole Model Based on the Numerical Respiratory Tract Model for Comprehensive Exposure Assessment to E-Cigarettes Reviewed International journal

    K Kuga, SJ Yoo, Kazuhide Ito, W Chen, P Wang, J Fowles, D Shusterman, K Kumagai

    Healthy Buildings 2017 Asia   2017.9

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  • Numerical Prediction of Tissue Dosimetry in Respiratory Tract using Computer Simulated Person integrated with PBPK-CFD Hybrid Analysis Reviewed International journal

    Sung-Jun Yoo, Kazuhide Ito

    Indoor and Built Environment   2017.2

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  • 経気道曝露リスク評価のためのPBPK-CFDモデルの統合 気道モデルを統合した数値人体モデルの開発 第3報 Reviewed

    Sung-Jun Yoo,伊藤一秀

    日本建築学会環境系論文集   2016.11

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  • PBPK-CSP-CFD Hybrid Analysis for Estimating Indoor Air Quality and Airway Tissue Dosimetry Reviewed International journal

    Sung-Jun Yoo, Kazuhide Ito

    IAQVEC 2016   2016.10

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  • Computational modeling of airflows and gas-phase contaminant dispersion in the respiratory tracts of dog, monkey, and humans Reviewed International journal

    Koki Mitsumune, Kazuki Kuga, Sung-Jun Yoo and Kazuhide Ito

    IAQVEC 2016   2016.10

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  • Numerical Prediction of Airway Tissue Dosimetry using PBPK-CFD Hybrid Model integrated into Computer Simulated Person Reviewed International journal

    Sung-Jun Yoo, Kazuhide Ito

    Indoor Air 2016   2016.7

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  • Numerical Prediction of Contaminant Distributions in Human Respiratory Tract for Exposure Assessment to E-Cigarettes Reviewed International journal

    Kazuki Kuga, Toshiki Matsuo, Sung-Jun Yoo, Kazuhide Ito, Wenhao Chen, Ping Wang, Jiawen Liao, Jeff Fowles, Dennis Shusterman, Kazukiyo Kumagai

    Indoor Air 2016   2016.7

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  • Prediction of convective heat transfer coefficient of human upper and lower airway surfaces in steady and unsteady breathing conditions Reviewed International journal

    Nguyen Lu Phuong, Masato Yamashita, Sung-Jun Yoo, Kazuhide Ito

    Building and Environment   2016.3

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  • Identification of Model Parameters of Vaporized Hydrogen Peroxide Decomposition Flux on Building Materials for Computational Fluid Dynamics Reviewed International journal

    Kazuhide Ito, Sung-jun Yoo and Hirofumi Horata

    Journal of Environmental Protection   2016.2

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  • 完全統合型数値人体モデルの概要と経気道暴露濃度解析 気道モデルを統合した数値人体モデルの開発 第2報 Reviewed

    Sung-Jun Yoo,伊藤一秀

    日本建築学会環境系論文集   2015.10

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  • Exposure Assessment to e-Cigarettes : Part 3 Preliminary Numerical Prediction of Contaminant Distributions in Human Respiratory Tract Models Reviewed International journal

    Kazuhide Ito, Masato Yamashita, Sung-Jun Yoo, Toshiki Matsuo, Wenhao Chen, Ping Wang, Jeff Fowles, Kazukiyo Kumagai

    Healthy Buildings 2015 America   2015.7

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  • A Multi-scale Exposure Concentration Analysis in A Large Factory Space Using A Computational Fluid Dynamics Technique Reviewed International journal

    Alicia Murga, Sung-Jun Yoo and Kazuhide Ito

    Healthy Buildings 2015 America   2015.7

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  • 数値気道モデル内の対流熱伝達解析による人体熱モデルの改良 気道モデルを統合した数値人体モデルの開発 第1報 Reviewed

    Sung-Jun Yoo,伊藤一秀

    日本建築学会環境系論文集   2015.3

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  • Development of Computer Simulated Person with Numerical Airway model, Part 2 Improved Thermo-Regulation Model with Heat and Moisture Transfer Detail Analysis in Respiratory Tract Reviewed International journal

    Sung-Jun Yoo, Toshiki Matsuo, Nguyen Lu Phuong, Kazuhide Ito

    Indoor Air 2014   2014.7

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  • Development of Computer Simulated Person with Numerical Airway model, Part 3 Breathing Air Quality Prediction by Improved Unsteady Breathing Flow Model Reviewed International journal

    Yosuke Kadota, Toshiki Matsuo, Sung-Jun Yoo, Nguyen Lu Phuong, Kazuhide Ito

    Indoor Air 2014   2014.7

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  • Development of Computer Simulated Person with Numerical Airway model, Part 1 Analysis of Breathing Contaminant Concentration and Respiratory Exposure Reviewed International journal

    Toshiki Matsuo, Sung-Jun Yoo, Nguyen Lu Phuong, Kazuhide Ito

    Indoor Air 2014   2014.7

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Presentations

  • 気道内対流熱伝達率解析結果を用いた数値人体熱モデルの改良

    Sung-Jun Yoo,伊藤一秀

    空気調和・衛生工学会九州支部学術研究発表会  2014.5 

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    Country:Japan  

  • 気道モデルを統合した数値人体モデルの開発 気道内対流熱伝達率解析による人体熱モデルの改良

    Sung-Jun Yoo,伊藤一秀

    空気調和衛生工学会大会  2014.9 

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    Country:Japan  

  • 呼吸器系詳細形状を再現したComputer Simulated Personの開発 (第2報) 室内濃度分布解析と連成した経気道暴露濃度予測

    Sung-Jun Yoo,伊藤一秀

    空気調和衛生工学会大会  2015.9 

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    Country:Japan  

  • 呼吸器系詳細形状を再現したComputer Simulated Personの開発 (第1報) 気道内熱・水分移動予測による人体熱モデルの改良

    Sung-Jun Yoo,伊藤一秀

    日本建築学会大会  2015.9 

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    Country:Japan  

  • 呼吸器系詳細形状を再現したComputer Simulated Personの開発 (第3報) PBPK-CSP-CFD連成解析による経気道曝露リスクの定量評価

    Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2017.3 

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    Country:Japan  

  • 経気道暴露評価のためのPBPK-CFD-CSP連成解析モデル

    Sung-Jun Yoo,伊藤一秀

    室内環境学会学術大会講演集  2017.12 

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    Language:Japanese  

    Country:Japan  

  • 統合数値人体モデルを使用したPersonalized Work Environment内の環境評価

    Sung-Jun Yoo, 伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2020.3 

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    Language:Japanese  

    Country:Japan  

  • 放射パネル空調による建築大空間の熱環境解析 その1 実測調査による熱環境評価

    荊イ, 尾崎明仁, 有馬雄祐, 劉城準, 崔連希, 川島潤一郎

    日本建築学会九州支部研究発表会  2024.3 

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    Event date: 2024.3

    Language:Japanese  

    Country:Japan  

  • オゾンの物質伝達と自然分解の特性に関する研究

    大下憲吾, 尾崎明仁, 有馬雄祐, 劉城準, 崔連希

    日本建築学会九州支部研究発表会  2024.3 

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    Event date: 2024.3

    Language:Japanese  

    Country:Japan  

  • 熱環境シミュレーションとCFD の連成による滝を含むバイオフィリック環境の数値解析

    楊賢テツ, 尾崎明仁, 劉城準, 有馬雄祐, 崔連希, 永瀬修, 高辻量

    日本建築学会九州支部研究発表会  2024.3 

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    Event date: 2024.3

    Language:Japanese  

    Country:Japan  

  • 熱交換と空気清浄を両立する複層竪ダクト型換気システム 第3報:ダクト設置方法ならびに処理換気量の変化が熱交換効率・粒子除去効率に与える影響

    王 琦,王 欣,劉 城準,伊藤一秀

    室内環境学会学術大会  2023.12 

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    Event date: 2023.12

    Language:Japanese  

    Country:Japan  

  • Comprehensive Numerical Investigation of Human Breathing Zones in Crowded Semi-outdoor Environment

    2023.12 

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    Event date: 2023.12

    Language:English  

    Country:Japan  

  • Computational Fluid Dynamics Modeling for Repeated Inhalation Exposure Assessment with OpenFOAM International conference

    K. Yokoo, S. Tanaka, M. Niwano, Y. Matoba, K. Kuga, S. Yoo, K. Ito

    SETAC North America 44th Annual Meeting  2023.11 

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    Event date: 2023.11

    Language:English  

    Country:Japan  

  • 熱交換と空気清浄を両立する複層竪ダクト型換気システム 第2報:ダクト設置方向が顕熱交換効率・粒子除去性能に与える影響

    王 欣,外川一,王 琦,劉 城準,伊藤 一秀

    日本冷凍空調学会 年次大会  2023.9 

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    Event date: 2023.9

    Language:Japanese  

    Country:Japan  

  • 熱交換と空気清浄を両立する複層竪ダクト型換気システム 第1報:プロトタイプモデルと顕熱交換効率と粒子除去性能の予備解析

    王 欣,外川一,鄭 朱娟,劉 城準,伊藤 一秀

    日本冷凍空調学会 年次大会  2022.9 

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    Event date: 2022.9

    Language:Japanese  

    Country:Japan  

  • 複雑形状を再現した着衣内の熱・水分・化学物質輸送モデルと数値人体モデルとの統合数値解析

    室田圭,劉城準,伊藤一秀

    空気調和・衛生工学会 九州支部学術技術交流会  2020.11 

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    Event date: 2020.11

    Language:Japanese  

    Country:Japan  

  • ドラフトチャンバー不適切使用条件を想定した排気風量低下時の捕集性能評価

    牟田諒太,劉城準,伊藤一秀

    空気調和衛生工学会講演  2020.9 

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    Event date: 2020.9

    Language:Japanese  

    Country:Japan  

  • 作業者の作業位置・姿勢の影響を考慮したドラフトチャンバーの捕集性能評価

    牟田諒太,鄭朱娟,劉城準,伊藤一秀

    室内環境学会学術大会講演集  2021.12 

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    Country:Japan  

  • Development of Computer Simulated Person Integrated Thermo-Regulation and Respiratory Air Tract Models for IEQ Assessment International conference

    Sung-Jun Yoo, Kauzhide Ito

    10th International Symposium on Novel Carbon Resource Sciences  2013.12 

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    Language:English  

    Country:Japan  

  • Development of Computer Simulated Person with Thermo-Regulation and Numerical Airway Model International conference

    Sung-Jun Yoo, Toshiyuki Matsuo, Nguyen Lu Phuong and Kazuhide Ito

    YSRIM 2014  2014.2 

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    Language:English  

    Country:Korea, Republic of  

  • 齧歯類を対象とした数値気道モデル開発と鼻腔内流れの数値解析

    光宗航基,山下真登,平瀬公太,Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2015.3 

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    Country:Japan  

  • 2種類の数値気道モデルを対象とした流れ場・温度場解析と気道内対流熱伝達率分布予測

    山下真登,Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2015.3 

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    Language:Japanese  

    Country:Japan  

  • 室内熱・空気環境評価のためのComputer Simulated Person開発と経気道暴露濃度評価シミュレーション

    伊藤一秀,Sung-Jun Yoo

    第49回空気調和・冷凍連合講演会  2015.4 

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    Language:Japanese  

    Country:Japan  

  • Multi-Stage Downscaling Predictions of Exposure Concentrations for Health Impact Assessment

    2015.9 

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    Language:English  

    Country:Japan  

  • 呼吸器系詳細形状を再現したComputer Simulated Personの開発 (第3報)  代謝を考慮した非定常呼吸サイクルモデルの提案と数値人体モデルへの統合

    門田陽介,Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2016.3 

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    Language:Japanese  

    Country:Japan  

  • e-Cigaretteを対象とした経気道暴露シミュレーション (第2報) ラット・イヌ・サルの数値気道モデルを対象とした経気道暴露濃度予測

    久我一喜,松尾俊紀,山下真登,Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2016.3 

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    Country:Japan  

  • e-Cigaretteを対象とした経気道暴露シミュレーション (第1報) Partition Coefficientを用いたガス-粘膜上皮相濃度の変換と吸着フラックス算出法

    松尾俊紀,久我一喜,山下真登,Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2016.3 

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    Language:Japanese  

    Country:Japan  

  • ヒト数値気道モデルを対象とした熱・エアロゾル粒子輸送解析

    山下真登,Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2016.3 

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    Language:Japanese  

    Country:Japan  

  • ラット・イヌ・サル・ヒトを対象とした上気道内対流熱伝達率解析

    光宗航基,久我一喜,山下真登,Sung-Jun Yoo

    日本建築学会九州支部研究発表会・研究報告  2016.3 

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    Country:Japan  

  • 咳由来の飛沫・飛沫核の輸送モデルとCFD-CSPとの連成解析

    松本秀真,久我一喜,Sung-Jun Yoo,伊藤一秀

    日本建築学会九州支部研究発表会・研究報告  2017.3 

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  • 気道粘膜上皮を対象とした電子煙草由来カルボニル化合物暴露のin silico評価

    久我一喜,Sung-Jun Yoo,伊藤一秀

    室内環境学会学術大会講演集  2017.12 

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    Country:Japan  

  • 異なるデシケーター幾何形状を対象としたホルムアルデヒドの等価拡散距離評価

    姜裕珍,Sung-Jun Yoo,伊藤一秀

    日本建築学会大会  2018.9 

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    Country:Japan  

  • Transient analysis of formaldehyde diffusion in confined desiccator considering the change of diffusivity in three-component gas mixture International conference

    Yujin Kang, Sung-jun Yoo, Kazuhide Ito

    CSS-EEST 2018  2018.11 

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    Language:English  

    Country:Korea, Republic of  

  • Mathematical modeling of photocatalytic oxidation process of toluene for building material with locally doped titanium dioxide International conference

    Yutaro Kyuma,Sung-Jun Yoo, Kazuhide Ito

    CSS-EEST 2018  2018.11 

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    Language:English  

    Country:Korea, Republic of  

  • 統合数値人体モデルによる室内環境質評価及び空調制御最適化への応用

    Sung-Jun Yoo,伊藤一秀

    室内環境学会学術大会  2018.12 

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    Language:Japanese  

    Country:Japan  

  • CFDと熱水分同時移動モデルの連成解析による換気用全熱交換エレメントの性能評価

    Juyeon Chung, 外川一, Sung-Jun Yoo, 伊藤一秀

    空気調和衛生工学会大会  2019.9 

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    Language:Japanese  

    Country:Japan  

  • Development of Digital Twin of Thermal Manikin and Comparative Simulation under Different Boundary Conditions

    2021.12 

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    Country:Japan  

  • 化学ポテンシャル表記に基づく衣服内熱水分同時輸送モデルと3次元着衣を再現した数値人体モデルの連成解析

    室田圭,劉城準,伊藤一秀

    室内環境学会学術大会講演集  2021.12 

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    Language:Japanese  

    Country:Japan  

  • 熱交換と空気清浄を両立する複層竪ダクト型換気システム(第3報) ダクト設置方法ならびに処理換気量の変化が熱交換効率・粒子除去効率に与える影響

    王 き, 王 欣, 劉 城準, 伊藤 一秀

    室内環境学会学術大会講演要旨集  2023.11  (一社)室内環境学会

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    Language:Japanese  

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Professional Memberships

  • 日本建築学会

  • 空気調和衛生工学会

  • 室内環境学会

Academic Activities

  • Screening of academic papers

    Role(s): Peer review

    2023

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:7

  • Screening of academic papers

    Role(s): Peer review

    2022

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:3

  • プログラム編集委員

    日本建築学会九州支部研究発表会  ( オンライン開催 ) 2021.3

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2021

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:3

  • プログラム編集委員

    日本建築学会九州支部研究発表会  ( 熊本大学(中止) ) 2020.3

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2020

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:1

  • 司会

    日本建築学会九州支部研究発表会・研究報告  ( 日本文理大学 ) 2019.3

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2019

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:4

  • Screening of academic papers

    Role(s): Peer review

    2018

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:1

  • Screening of academic papers

    Role(s): Peer review

    2018

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:1

  • HP作成・維持,韓国側連絡担当 International contribution

    2017.11 - 2017.12

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    Type:Competition, symposium, etc. 

    Number of participants:150

  • 座長(Chairmanship) International contribution

    2017.9

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    Type:Competition, symposium, etc. 

  • 司会(Moderator)

    日本建築学会九州支部研究発表会・研究報告  ( 長崎大学 ) 2017.3

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    Type:Competition, symposium, etc. 

  • Screening of academic papers

    Role(s): Peer review

    2016

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    Type:Peer review 

    Proceedings of International Conference Number of peer-reviewed papers:3

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Research Projects

  • Development of comprehensive analysis method for respiratory/dermal exposure risks to ammonia in work spaces

    Grant number:24K01040  2024 - 2026

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

    CiNii Research

  • Quantitative investigation of non-uniform and transient CO2 concentration distribution in breathing zone for advanced indoor environmental design

    Grant number:21K14306  2021 - 2023

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Early-Career Scientists

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    Authorship:Principal investigator  Grant type:Scientific research funding

    CiNii Research

  • Development of in silico model for health impact assessment of Asbestos emitted from building materials

    Grant number:20KK0099  2020 - 2023

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Fostering Joint International Research (B)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

    CiNii Research

  • 動作と生理的薬物動態を再現する数値人体モデルの開発と室内空気質制御への応用

    2020 - 2021

    大成学術財団 研究助成

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    Authorship:Principal investigator  Grant type:Contract research

  • 環境流体工学手法によるラット・サル・ヒトの経気道暴露メカニズムの解明

    Grant number:18K13880  2018 - 2020

    日本学術振興会  科学研究費助成事業  若手研究

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 電子煙草使用に伴う吸入曝露と吐出噴流による室内空気汚染の予測

    2017 - 2018

    科学研究費助成事業  若手研究(B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 電子煙草(e-Cigarette)使用に伴う1次曝露と室内環境中での2次・3次曝露の定量評価モデル

    2017

    LIXIL住生活財団 若手研究助成(若手研究者)

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    Authorship:Principal investigator  Grant type:Contract research

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Class subject

  • Doctoral Studies in Numerical Simulation of Architectural Environment

    2024.4 - 2025.3   Full year

  • 建築環境シミュレーション学講究

    2024.4 - 2025.3   Full year

  • 脱炭素エネルギー概論

    2024.4 - 2024.9   First semester

  • 建築環境シミュレーション学特論

    2024.4 - 2024.9   First semester

  • データサイエンス序論

    2023.10 - 2024.3   Second semester

  • 建築環境設備設計演習

    2023.10 - 2024.3   Second semester

  • 建築環境学ゼミナールⅠ

    2023.10 - 2024.3   Second semester

  • 建築環境学ゼミナールⅡ

    2023.10 - 2024.3   Second semester

  • 建築学研究序説

    2023.10 - 2024.3   Second semester

  • 創造科学工学基礎実験

    2020.10 - 2021.3   Second semester

  • 課題集約演習

    2020.10 - 2021.3   Second semester

  • エネルギー工学実験

    2020.4 - 2020.9   First semester

  • 課題集約演習

    2019.10 - 2020.3   Second semester

  • エネルギー工学実験

    2019.4 - 2019.9   First semester

  • 創造科学工学基礎実験

    2018.10 - 2019.3   Second semester

  • 創造科学工学基礎実験

    2018.10 - 2019.3   Second semester

  • エネルギー工学実験

    2018.4 - 2018.9   First semester

  • 創造科学工学基礎実験

    2017.10 - 2018.3   Second semester

  • 課題集約演習

    2017.10 - 2018.3   Second semester

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Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.

  • 2021  福岡女子大学 国際文理学部 環境科学科  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:4Q 金3・4限

  • 2019  北九州市立大学 大学院環境工学専攻 建築デザインコース  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:「CFD解析による室内温熱・空気環境評価」 大学院1年次 後期(1コマ) 2018.11.8 16:10~17:40