CHANGHONG HU | Last modified date:2023.06.09 |
Graduate School
Other Organization
Homepage
https://kyushu-u.pure.elsevier.com/en/persons/changhong-hu
Reseacher Profiling Tool Kyushu University Pure
http://www.riam.kyushu-u.ac.jp/ship/STAFF/hu/index.html
Academic Degree
PhD in Engneering
Country of degree conferring institution (Overseas)
Yes Bachelor Master Doctor
Field of Specialization
Marine renewable energy, Ship and ocean engineering, Computational fluid dynamics
ORCID(Open Researcher and Contributor ID)
0000-0002-8308-9180
Total Priod of education and research career in the foreign country
01years00months
Outline Activities
- Research activities -
Theoretical analysis, physical experiments, and numerical simulations are carried out to study the wave safety problems of ships and offshore structures, and hydrodynamic problems related to the development of marine renewable energy utilization. The following is a chronological list of the major research themes conducted (or being conducted) up to the present.
1. Investigation of slow drift damping due to viscous force acting on a cylinder.
2. Environmental assessment of Mega Float.
3. Development of multiphase flow CFD method and its application to fire simulation and gas diffusion prediction.
4. Experiments and numerical calculations on fire protection and fire extinguishing in ship engine rooms.
5. Development of a CIP-based method for strongly nonlinear wave-body interactions.
6. Development of a coupled fluid-structure analysis method and its application to wave safety and system optimization of FOWT.
7. Development of a new floating platform for multiple wind turbines.
8. Tidal current turbine wake modeling and array arrangement optimization.
9. Development of next-generation CFD solver for strongly nonlinear wave-body interactions.
10. Development of Floating Offshore Tower for Power Transmission System Over the Sea.
11. Development of TLP type floating offshore wind measurement tower
- Education activities -
From 1995 to 2002, as an assistant professor of Kyushu University, involved in education activities.
From 2002, as an associate professor, and from 2014 as a professor of Kyushu University, in charge of a cooperative laboratory in the Department of Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences.
Theoretical analysis, physical experiments, and numerical simulations are carried out to study the wave safety problems of ships and offshore structures, and hydrodynamic problems related to the development of marine renewable energy utilization. The following is a chronological list of the major research themes conducted (or being conducted) up to the present.
1. Investigation of slow drift damping due to viscous force acting on a cylinder.
2. Environmental assessment of Mega Float.
3. Development of multiphase flow CFD method and its application to fire simulation and gas diffusion prediction.
4. Experiments and numerical calculations on fire protection and fire extinguishing in ship engine rooms.
5. Development of a CIP-based method for strongly nonlinear wave-body interactions.
6. Development of a coupled fluid-structure analysis method and its application to wave safety and system optimization of FOWT.
7. Development of a new floating platform for multiple wind turbines.
8. Tidal current turbine wake modeling and array arrangement optimization.
9. Development of next-generation CFD solver for strongly nonlinear wave-body interactions.
10. Development of Floating Offshore Tower for Power Transmission System Over the Sea.
11. Development of TLP type floating offshore wind measurement tower
- Education activities -
From 1995 to 2002, as an assistant professor of Kyushu University, involved in education activities.
From 2002, as an associate professor, and from 2014 as a professor of Kyushu University, in charge of a cooperative laboratory in the Department of Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences.
Research
Research Interests
Membership in Academic Society
- Study of skirt suction jacket (SSJ) foundation for bottom-mounted offshore wind turbines
keyword : Bottom-mounted offshore wind turbine, SSJ foundation, Towing stability
2022.04. - Development of a medium-sized wind lens turbine and its multi-rotor implementation
keyword : WLT, Multi-rotor system, CFD simulation, Wind tunnel experiment
2022.04. - Development of TLP-Type Floating Mast/Lidar System for Overhead Wind Measurement
keyword : Floating Offshore Tower, Hybrid Mast/Lidar System, TLP
2020.04. - Development of TLP-Type Floating Offshore Tower for Overhead Power Transmission in the Sea
keyword : Floating Offshore Tower, Overhead Power Transmission System in the Sea, TLP
2016.04. - Development of floating offshore wind turbine system with fishery cooperation for distributed power supply
keyword : Offshore wind energy, new-type floating platform, distributed power supply, fishery cooperation
2012.04. - Tidal current turbine wake modelling and array arrangement optimization for tidal farm
keyword : Tidal current energy, wake modelling, arrangement optimization
2014.07. - Development of next-generation high-performance CFD solver and application to fluid-structure interaction analysis
keyword : CFD, Fluid-Structure Interaction, Free surface impact
2008.04. - Study on wave safety and wake prediction of large floating offshore wind turbines
keyword : Large-scale floating offshore wind turbine, Safety analysis, Wave impact, CFD
2010.04. - Development of efficient CFD method for strongly nonlinear wave body interactions
keyword : strongly nonlinear free surface surface motion, computational fluid dynamics, interface capturing method, wave impact
2002.04Development of CFD simulation method for extremely nonlinear wave-body interaction Numerical simulation of floating body motion in rough seas is a challenging subject. The main difficulty arises from that the topology of free surface may be largely distorted or broken up, which makes it impossible to apply the conventional numerical method such as the potential-flow based method by BEM. In this study a new numerical method is developed. This method is a CIP based finite difference method which is not only able to handle the complex phenomena associated with the wave-body interaction, but also have relatively simple scheme in order to perform a three-dimensional time-dependent numerical simulations in an acceptable spatial and temporal resolution at a reasonable cost.. - Environmental assessment on marine CCS
keyword : Marine CCS, deep ocean storage, diffusion simulation, environmental assessment
2010.04~2016.03. - Development of a New Ship Hull Form for Reducing CO2 Emission in a Seaway
keyword : CO2 emission reduction, Energy-saving ship hull, CFD simulation
2009.04. - Numerical simulation of marine engine room fires
keyword : engine room fire, CFD simulation, fire modeling
2000.04~2004.03In this research, a CFD model has been developed for numerical simulation of marine fires.. - Numerical simulation of low-concentration particle-gas multi-phase flows
keyword : metallic fume, numerical simulation, low-concentration particle-gas multi-phase flow, working environment
1998.04~2002.03An high-efficiency ventilation System is very important for improving working environment in a fabrication shop of shipyard. The metallic fume generated from the welding or cutting process is expected to predict. In this research a numerical simulation method is developed and improved for this purpose. Now research on applying this method to prediction general air polution problems is ongoing..
- In November 2022, a Ministry of the Environment-funded project on the Technological development of a medium-sized 200kW wind lens turbine and its multi-rotor system was adopted, and Kyushu University will conduct hydrodynamic studies (optimized lens design, the hydrodynamic study of the multi-rotor system, etc.) on wind turbine development as a joint implementer.
- For developing a skirt suction jacket (SSJ) installation method that does not require large operation vessels, model experiments and numerical simulations are carried out to investigate methods for towing and sinking the SSJ.
- Understanding VIV behavior in the tidal flow of power transmission cables for bottom-mounted wind turbines is crucial for the structural and fatigue design of the cables. This study aims to clarify the relationship between VIV behavior and internal stresses of the cables through tank experiments and numerical analysis and to develop efficient numerical prediction tools.
- The final goal of this research is to develop an novel power transmission system over the sea, of which the total cost will be much lower than the conventional system. In this research project, an low cost installing method for the floating tower will be studied by both experiment and numerical simulation.
- The final goal of this research is to establish an effective CFD analytical procedure for numerical simulation of a tidal current farm. A CFD method based on OpenFOAM will be developed for predicting the force coefficients and characterizing the wake of a tidal turbine. The experiment will also be carried out for validation of the CFD code.
- As a part of large scale floating ocean renewable energy system project of RIAM, Kyushu University, a noval multi-purpose, cost effective semi-submersible type platform is developed with the coorperation of industries.
- Fundemental researches are carried out on safety and environment assessment of ocean CCS, which is a project promoted by the "International Institute for Carbon-Neutral Energy Research (I2CNER)" of Kyushu University.
Books
Papers
Presentations
- The International Society of Offshore and Polar Engineers
- The Japan Society of Naval Architects and Ocean Engineers
- The Japan Society of Mechanical Engineers
Educational
Educational Activities
From 1995 to 2002, as an assistant professor at Kyushu University, involved in educational activities.
From 2002, as an associate professor, and from 2014 as a professor of Kyushu University, in charge of a cooperative laboratory in the Department of Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences. Lectures for graduated students are as follows.
Master Course:
(1) Earth system fluid dynamics 1 (shear, 2 credits)
(2) An Introduction to CFD (2 credits)
(3) Dynamics of ocean systems Seminar (4 credits)
(4) Practical data processing (common, shear, 2 credits)
Doctor Course:
(1) Special lecture on ocean systems dynamics (4 credits)
(2) Tutorials on PhD thesis (2 credits)
(3) Tutorials on interdisciplinary engineering sciences (Environment) (shear, 2 credits)
From 2002, as an associate professor, and from 2014 as a professor of Kyushu University, in charge of a cooperative laboratory in the Department of Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences. Lectures for graduated students are as follows.
Master Course:
(1) Earth system fluid dynamics 1 (shear, 2 credits)
(2) An Introduction to CFD (2 credits)
(3) Dynamics of ocean systems Seminar (4 credits)
(4) Practical data processing (common, shear, 2 credits)
Doctor Course:
(1) Special lecture on ocean systems dynamics (4 credits)
(2) Tutorials on PhD thesis (2 credits)
(3) Tutorials on interdisciplinary engineering sciences (Environment) (shear, 2 credits)
Social
Professional and Outreach Activities
Academic and industry collaboration
2003-2007 Development of CFD for strongly nonlinear wave-body interactions, (with Akishima Laboratories INC.)
2008-2013 CFD development for predicting ship hydrodynamics with the consideration of hull form above waterline, (with Mitrui Engineering and Shipbuilding Co., LtD)
2009-2010 CFD development for Prediction of wave loads in bow seas, (with ClassNK)
2011-2013 Study on safety assessment method for floating wind turbine, (with ClassNK)
2012-2015 Development of novel ocean platform for offshore wind, (with Oshima Shipbuilding, Shikurushima Dock, Tsuneishi holdings)
2015-present Development of TLP floating tower for offshore power transmission in the air, (with Furukawa Electric, Toray, Akishima Laboratory, Japan Radio)
International collaboration research
2009-2010 Numerical simulation on violent tank sloshing, (with Seoul National University, Korea)
2012-2014 Experimental and numerical study on tidal energy converters, (with Harbin Engineering University, China)
2015-present Delopment of high performance CFD method for FOWT, (with Shanghai Jiao Tong University, China).
2003-2007 Development of CFD for strongly nonlinear wave-body interactions, (with Akishima Laboratories INC.)
2008-2013 CFD development for predicting ship hydrodynamics with the consideration of hull form above waterline, (with Mitrui Engineering and Shipbuilding Co., LtD)
2009-2010 CFD development for Prediction of wave loads in bow seas, (with ClassNK)
2011-2013 Study on safety assessment method for floating wind turbine, (with ClassNK)
2012-2015 Development of novel ocean platform for offshore wind, (with Oshima Shipbuilding, Shikurushima Dock, Tsuneishi holdings)
2015-present Development of TLP floating tower for offshore power transmission in the air, (with Furukawa Electric, Toray, Akishima Laboratory, Japan Radio)
International collaboration research
2009-2010 Numerical simulation on violent tank sloshing, (with Seoul National University, Korea)
2012-2014 Experimental and numerical study on tidal energy converters, (with Harbin Engineering University, China)
2015-present Delopment of high performance CFD method for FOWT, (with Shanghai Jiao Tong University, China).
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