Kyushu University Academic Staff Educational and Research Activities Database
Researcher information (To researchers) Need Help? How to update
Yingyi Liu Last modified date:2022.05.12

Graduate School

E-Mail *Since the e-mail address is not displayed in Internet Explorer, please use another web browser:Google Chrome, safari.
 Reseacher Profiling Tool Kyushu University Pure
Laboratory webpage .
Interdisciplinary Graduate School of Engineering Sciences (IGSES) .
Google Scholar Citation .
Mendeley .
ResearcherID .
Scopus .
ResearchGate .
Publons .
Academic Degree
Doctor of Engineering, Master of Engineering, Bachelor of Engineering
Country of degree conferring institution (Overseas)
Yes Bachelor Master
Field of Specialization
Earth System, Science and Technology
ORCID(Open Researcher and Contributor ID)
Total Priod of education and research career in the foreign country
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 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
  • Numerical modeling of wave energy converters in isolation or arrays
    keyword : Ocean wave energy, wave farm, numerical modeling
  • Dynamic analysis of floating offshore wind turbines and the tower aerodynamics on the wind turbine performance
    keyword : floating type, tower aerodynamics
  • 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
Academic Activities
1. Yingyi Liu, Hui Liang, Masashi Kashiwagi, Peiwen Cong, Alternative approaches of evaluating diffraction transfer matrix and radiation characteristics using the hybrid source-dipole formulation, Applied Ocean Research, 10.1016/j.apor.2021.102769, 114, 102769, 2021.09, [URL].
2. Yingyi Liu, Changhong Hu, Makoto Sueyoshi, Shigeo Yoshida, Hidetsugu Iwashita, Masashi Kashiwagi, Motion Response Characteristics of a Kyushu-University Semi-Submersible Floating Wind Turbine with Trussed Slender Structures: Experiment vs. Numerical Simulation, Ocean Engineering, 10.1016/j.oceaneng.2021.109078, 232, 109078, 2021.07, [URL].
3. Yingyi Liu, Boyin Ding, Binzhen Zhou, Peiwen Cong, Siming Zheng, Editorial: Advances and Challenges in Ocean Wave Energy Harvesting, Frontiers in Energy Research, 10.3389/fenrg.2020.614904, 8, 614904, 2020.12, [URL].
4. Yingyi Liu, Peiwen Cong, Ying Gou, Shigeo Yoshida, Masashi Kashiwagi, Enhanced Endo's approach for evaluating free-surface Green's function with application to wave-structure interactions, Ocean Engineering, 10.1016/j.oceaneng.2020.107377, 207, 107377, 2020.07, [URL].
5. 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, [URL].
6. 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, [URL].
7. 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].
8. Yingyi Liu, Shigeo Yoshida, An extension of the generalized actuator disc theory for aerodynamic analysis of the diffuser-augmented wind turbines, Energy, 10.1016/, 93, 2, 1852-1859, 2015.12, [URL].
9. 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].
10. 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].
11. 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].
12. 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. Yingyi Liu, Siming Zheng, Hui Liang, Peiwen Cong, Wave energy absorption amongst arrays of point absorbers with a non-regular geometry, Proc. of the 37th International Workshop on Water Waves and Floating Bodies (IWWWFB37), 2022.04, [URL].
2. Yingyi Liu, Introduction of the Open-Source Boundary Element Method Solver HAMS to the Ocean Renewable Energy Community, Proc. of the 14th European Wave and Tidal Energy Conference (EWTEC2021), 2021.09.
3. Yingyi Liu, Changhong Hu, Shigeo Yoshida, Time-Domain Response of a Semi-Submersible Floating Wind Turbine with Trussed Slender Structures, Proc. of the 14th ISOPE Pacific-Asia Offshore Mechanics Symposium (PACOMS 2020), 2021.05, [URL].
4. , [URL].
5. 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..
6. 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.
7. 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].
8. 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].
Membership in Academic Society
  • IEEE Power & Energy Society (IEEE-PE)
  • IEEE Oceanic Engineering Society (IEEE-OE)
  • Institute of Electrical and Electronics Engineers (IEEE)
  • International Society of Offshore and Polar Engineers (ISOPE)
  • The Japan Society of Naval Architects and Ocean Engineers (JASNAOE)
  • International Network on Offshore Renewable Energy (INORE)
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.
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).