Kyushu University Academic Staff Educational and Research Activities Database
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Yingyi Liu Last modified date:2019.07.03



Graduate School


E-Mail
Homepage
http://www.riam.kyushu-u.ac.jp/REC/member.html
Laboratory webpage .
http://www.tj.kyushu-u.ac.jp/en/igses/c_research/academic_staff_esst.php
Interdisciplinary Graduate School of Engineering Sciences (IGSES) .
https://scholar.google.co.jp/citations?user=mpR3MvAAAAAJ&hl=ja
Google Scholar Citation .
https://nrid.nii.ac.jp/ja/nrid/1000030799127/
NRID .
http://orcid.org/0000-0003-2935-9626
ORCID .
https://www.mendeley.com/profiles/yingyi-liu4/
Mendeley .
http://www.researcherid.com/rid/L-2911-2016
ResearcherID .
http://www.scopus.com/inward/authorDetails.url?authorID=56349366800&partnerID=MN8TOARS
Scopus .
https://www.researchgate.net/profile/Yingyi_Liu4
ResearchGate .
https://publons.com/researcher/1397244/yingyi-liu/
Publons .
Phone
092-583-7785
Fax
092-583-7784
Academic Degree
Doctor of Engineering, Master of Engineering, Bachelor of Engineering
Country of degree conferring institution (Overseas)
Yes
Field of Specialization
Earth System, Science and Technology
ORCID(Open Researcher and Contributor ID)
https://orcid.org/0000-0003-2935-9626
Total Priod of education and research career in the foreign country
07years00months
Outline Activities
(1) Research: Floating wind turbine dynamic analysis, wind turbine aerodynamics, floating body hydrodynamics, etc.
(2) Education: Interdisciplinary Graduate School of Engineering and Science (IGSES)・Department of Earth System Science and Technology (ESST)・Nonlinear Fluid Engineering Laboratory (NLFE)
Research
Research Interests
  • Wake effect on the loading and performance of downstream wind turbines and the optimal layout of a wind farm
    keyword : analytical modeling, wake effect, wind farm
    2019.04~2022.06.
  • Numerical modeling of wave energy converters in isolation or arrays
    keyword : Ocean wave energy, wave farm, numerical modeling
    2018.04~2022.06.
  • Dynamic analysis of floating offshore wind turbines and the tower aerodynamics on the wind turbine performance
    keyword : floating type, tower aerodynamics
    2017.07~2022.06.
  • Water wave interaction with marine structures in frequency domain and time domain
    Development of high-efficiency computational codes in offshore hydrodynamics
    keyword : Naval Hydrodynamics, Ocean Engineering
    2009.09~2022.06.
Academic Activities
Papers
1. Yingyi Liu, HAMS: A frequency-domain preprocessor for wave-structure interactions-Theory, development, and application, Journal of Marine Science and Engineering, 10.3390/jmse7030081, 7, 81, 1-19, 2019.03.
2. Yingyi Liu, Shigeo Yoshida, Hiroshi Yamamoto, Akinori Toyofuku, Guanghua He, Shunhan Yang, Response characteristics of the DeepCwind floating wind turbine moored by a Single-Point Mooring system, Applied Sciences (Switzerland), 10.3390/app8112306, 8, 11, 1-20, 2018.11.
3. Yingyi Liu, Shigeo Yoshida, Changhong Hu, Makoto Sueyoshi, Liang Sun, Junliang Gao, Peiwen Cong, Guanghua He, A reliable open-source package for performance evaluation of floating renewable energy systems in coastal and offshore regions, Energy Conversion and Management, 10.1016/j.enconman.2018.08.012, 174, 516-536, 2018.10, [URL], The booming developments of coastal/offshore renewable energies in recent years call for a powerful numerical code, ideally open-source packaged, to accelerate the researches in the spotlight. This paper presents such an efficient software package for evaluating the performance of floating renewable energy systems in the coastal and offshore regions. It aims to contribute an open-source effort in numerical simulations for ocean energy converters. Though computation of the free-surface effect in moderate depth region is extremely troublesome due to the singularities, the software package proposed in the present paper gives a satisfactory solution to keep the balance of accuracy and efficiency. In the present paper, the interface and structure of the package are introduced in detail so as to be well understood by the reader. Benchmark tests for various types of converters have confirmed the accuracy and efficiency of the package which can be incorporated easily with a frequency domain solver for efficient analysis. By contributing as one of the pioneer works in the open-source effort of evaluating the moderate-depth free-surface Green’s function, with its advantages of a reliable accuracy and a relatively low cost, the authors are hoping that the publication of the present software package will promote the continuous researches in developing robust and reliable coastal and offshore renewable energy systems..
4. Yingyi Liu, Shigeo Yoshida, An extension of the generalized actuator disc theory for aerodynamic analysis of the diffuser-augmented wind turbines, Energy, 10.1016/j.energy.2015.09.114, 93, 2, 1852-1859, 2015.12, [URL].
5. Yingyi Liu, Changhong Hu, Sueyoshi Makoto, Hidetsugu Iwashita, Masashi Kashiwagi, Motion response prediction by hybrid panel-stick models for a semi-submersible with bracings, Journal of Marine Science and Technology, 10.1007/s00773-016-0390-1, 21, 4, 742-757, 2016.12, [URL].
6. Yingyi Liu, Hidetsugu Iwashita, Changhong Hu, A calculation method for finite depth free-surface green function, International Journal of Naval Architecture and Ocean Engineering, 10.1515/ijnaoe-2015-0026, 7, 2, 375-389, 2015.03, [URL].
7. Yingyi Liu, Bin Teng, Peiwen Cong, Changfeng Liu, Ying Gou, Analytical study of wave diffraction and radiation by a submerged sphere in infinite water depth, Ocean Engineering, 10.1016/j.oceaneng.2012.05.004, 51, 129-141, 2012.07, [URL].
8. Yingyi Liu, Ying Gou, Bin Teng, Shigeo Yoshida, An Extremely Efficient Boundary Element Method for Wave Interaction with Long Cylindrical Structures Based on Free-Surface Green’s Function, Computation, 10.3390/computation4030036, 4, 3, 1-20, 2016.09, [URL].
Works, Software and Database
1.
[URL].
Presentations
1. Yingyi Liu, Shigeo Yoshida, Hiroshi Yamamoto, Akinori Toyofuku, Changhong Hu, Makoto Sueyoshi, Hongzhong Zhu, Release of a reliable open-source package for performance evaluation of ocean renewable energy devices, 4th Asian Wave and Tidal Energy Conference (AWTEC 2018), 2018.09, Marine renewable energy (MRE) devices, such as offshore wind turbines, wave energy converters and tidal energy converters, are usually in the form of floating types and anchored by mooring systems. To analyze the feasibility of these floating systems in an efficient manner with respect to a wide band of frequency, frequency domain methods are good options to choose. In the present work, we developed an efficient software package for evaluating the performance of floating renewable energy systems in the coastal and offshore regions. It aims to contribute an open-source effort to numerical simulations for ocean energy converters. The interface and structure of the software package are introduced in detail so as to let it be well understood by the readers. Computations of a benchmark geometry and two practical applications of floating wind turbine are conducted and compared with theoretical results, experimental data and results from commercial software Hydrostar, justifying the effectiveness of the developed software package..
2. Yingyi Liu, Changhong Hu, Sueyoshi Makoto, Shigeo Yoshida, Yuichiro Honda, Yuji Ohya, Time domain simulation of a semi-submersible type floating wind turbine, 24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan, 2014.06, [URL].
3. Yingyi Liu, Changhong Hu, Sueyoshi Makoto, Hidetsugu Iwashita, Hydrodynamic analysis of a semi-submersible FOWT by hybrid panel-stick models, 25th International Ocean and Polar Engineering Conference, ISOPE 2015, 2015.06, [URL].
4. Yingyi Liu, Yoshida Shigeo, Development of an open-source package for computing free-surface Green’s function in constant-depth ocean Topography: FinGreen3D, International Symposium on Ocean Science and Technology, 2017.11.
Membership in Academic Society
  • The Japan Society of Naval Architects and Ocean Engineers (JASNAOE)
  • International Network on Offshore Renewable Energy (INORE)
Educational
Educational Activities
I'm affiliated to the Department of Earth System Science & Technology, the Graduate School of Science and Engineering of Kyushu University.

I'm engaged in the research work of graduate students and provide guidance on daily technical solutions and Q&A to the graduate students.

Assist guidance on preparing Master theses by the graduate students.
Social
Professional and Outreach Activities
Made an academic exchange agreement with France Bureau Veritas Marine & Offshore Division
Made an academic exchange agreement with Harbin Institute of Technology (Weihai).