Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Yingyi Liu Last modified date:2023.09.20

Assistant Professor / Renewable Energy Center / Research Institute for Applied Mechanics


Papers
1. Peiwen Cong, Yingyi Liu, Xuanqi Wei, Dezhi Ning, Bin Teng, Hydrodynamic performance of a self-protected hybrid offshore wind-wave energy system, Physics of Fluids, 10.1063/5.0161978, 35, 097107, 2023.09, [URL].
2. Peng Jin, Zhi Zheng, Zhaomin Zhou, Binzhen Zhou, Lei Wang, Yang Yang, Yingyi Liu, Optimization and evaluation of a semi-submersible wind turbine and oscillating body wave energy converters hybrid system, Energy, 10.1016/j.energy.2023.128889, 282, 128889, 2023.11, [URL].
3. Sijia Deng, Yingyi Liu, Dezhi Ning, Fully coupled aero-hydrodynamic modelling of floating offshore wind turbines in nonlinear waves using a direct time-domain approach, Renewable Energy, 10.1016/j.renene.2023.119016, 216, 119016, 2023.11, [URL].
4. Ruo Luo, Yingyi Liu, Hongzhong Zhu, Changhong Hu, Numerical and experimental investigation of a floating overhead power transmission system, Ocean Engineering, 10.1016/j.oceaneng.2023.115085, 284, 115085, 2023.09, [URL].
5. Peiwen Cong, Mingqiang Zhao, Bin Teng, Ying Gou, Yingyi Liu, Second-order near trapping of water waves by a square array of vertical columns in bi-chromatic seas, Journal of Fluids and Structures, 10.1016/j.jfluidstructs.2023.103916, 121, 103916, 2023.08, [URL].
6. Yixin Qian, Bin Teng, Yingyi Liu, Semi-analytic solutions to edge singularities of three-dimensional axisymmetric bodies, Physics of Fluids, 10.1063/5.0154364, 35, 067127, 2023.06, [URL].
7. Kai Wang, Yuefeng Chu, Shuo Huang, Yingyi Liu, Preliminary design and dynamic analysis of constant tension mooring system on a 15 MW semi-submersible wind turbine for extreme conditions in shallow water, Ocean Engineering, 10.1016/j.oceaneng.2023.115089, 283, 115089, 2023.09, [URL].
8. Junliang Gao, Huabin Shi, Jun Zang, Yingyi Liu, Mechanism analysis on the mitigation of harbor resonance by periodic undulating topography, Ocean Engineering, 10.1016/j.oceaneng.2023.114923, 281, 114923, 2023.08, [URL].
9. Binzhen Zhou, Zhi Zheng, Jianjian Hu, Chusen Lin, Peng Jin, Lei Wang, Yingyi Liu, Annual performance and dynamic characteristics of a hybrid wind-wave floating energy system at a localized site in the North Sea, Ocean Engineering, 10.1016/j.oceaneng.2023.114872, 280, 114872, 2023.07, [URL].
10. Haoyu Ding, Jun Zang, Peng Jin, Dezhi Ning, Xuanlie Zhao, Yingyi Liu, Chris Blenkinsopp, Qiang Chen, Optimisation of the Hydrodynamic Performance of a wave energy converter in an Integrated Cylindrical WEC-Type Breakwater System, Journal of Offshore Mechanics and Arctic Engineering, 10.1115/1.4056942, 145, 5, 054501, 2023.10, [URL].
11. Peiwen Cong, Bin Teng, Yingyi Liu, Dezhi Ning, A numerical approach for hydrodynamic performance evaluation of multi-degree-of-freedom floating oscillating water column (OWC) devices, Journal of Fluids and Structures, 10.1016/j.jfluidstructs.2022.103730, 114, 103730, 2022.10, [URL].
12. Peiwen Cong, Bin Teng, Ying Gou, Lei Tan, Yingyi Liu, Hydrodynamic analysis of resonant waves within the gap between a vessel and a vertical quay wall, Ocean Engineering, 10.1016/j.oceaneng.2022.112192, 260, 112192, 2022.09, [URL].
13. Yingyi Liu, Siming Zheng, Hui Liang, Peiwen Cong, Wave interaction and energy absorption from arrays of complex-shaped point absorbers, Physics of Fluids, doi.org/10.1063/5.0107914, 34, 9, 2022.09, [URL], Water wave interactions with arrays of wave energy converters are numerically investigated based on the interaction theory. The converter is a heaving point absorber that can harness ocean wave energy through up-and-down movements. A semi-analytical hybrid method is developed that combines the boundary element method and the interaction theory. The developed numerical method is verified against theoretical solutions for arrays of truncated vertical circular cylinders. Three different array layouts are studied in detail. It is found that trapped waves exist at critical wave numbers just below the cutoff values, and the peak load on the middle device increases with the number of devices in head waves. With the increase in the complexity of the array layout, significant wave force enhancement is observed, leading to a broader range of magnitude and stronger variations over the frequency band in beam waves. Moreover, variations of the q-factor show that there are some remarkable “bright spot” regions, indicating that the wave energy absorption there is locally optimized against wave conditions. By arranging the layout in a more randomized way, the optimal conditions for maximized power output can be hard to achieve, but the maximum power output can increase to a higher level..
14. Binzhen Zhou, Qi Zhang, Peng Jin, Yan Li, Yingyi Liu, Siming Zheng, Dezhi Ning, Geometric asymmetry in the energy conversion and wave attenuation of a power-take-off-integrated floating breakwater, Ocean Engineering, 10.1016/j.oceaneng.2022.110576, 246, 2022.02, [URL].
15. Siming Zheng, Wei Gao, Yingyi Liu, Shanshan Cheng, Wave diffraction from a truncated cylinder with a moonpool of arbitrary cross-section: A semi-analytical study, Ocean Engineering, 10.1016/j.oceaneng.2021.109573, 237, 109573, 2021.10, [URL].
16. 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], The interaction theory presented by Kagemoto and Yue (1986) significantly reduces the computational burden in the wave interaction problem of multiple surface-piercing bodies, particularly arrays of wave energy converters in recent years. Two essential operators of the theory are the so-called Diffraction Transfer Matrix and Radiation Characteristics. Many subsequent researchers (Goo and Yoshida, 1990; Flavià et al., 2018) have implemented the theory using the source distribution method in evaluating the two linear operators of a single unique geometry. However, nowadays, a great majority of boundary element method codes have been written by virtue of the hybrid source-dipole distribution method on account of its high accuracy. In this regard, the present work aims to introduce a full set of mathematical formulations, as well as a complete derivation process of evaluating the two operators based on the hybrid source-dipole distribution method. The proposed formulations are then applied to two benchmark geometries, as given by McNatt et al. (2015) and Flavià et al. (2018). Good agreement is found between the present results and those from the literature. Moreover, two alternative approaches to solve the diffraction problem have been compared to assess both their accuracy and efficiency. It is found that the two methods present similar levels of accuracy but very different computational burden..
17. 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], Understanding the dynamics of an FWT (Floating Wind Turbine) is essential for its design and operation. Since a truss structure can reduce the wave load/resistance on the floating foundation, it becomes more popular in industrial applications. In this regard, knowing the effect of slender members of the truss structure on the motion response characteristics of such an FWT is vital. The present work develops a time-domain method for modeling the dynamics of a floating truss-structure wind turbine with multiple rotors on the deck of the platform. A hybrid panel-stick model is built up incorporating the potential flow theory to calculate the wave inertia force and a Morison strip method to calculate the wave drag force. A systematic methodology, and the corresponding efficient tool, have been developed to deal with the floating trussed structure consisting of a set of slender cylindrical members in arbitrary lengths, diameters, orientations, and locations. The Morison dynamic solver is incorporated into the time-domain solver for the FWT dynamics. The proposed model is validated against a model experiment of a semi-submersible FWT with a triangular-shaped truss-structured platform, which was carried out in RIAM (Research Institute for Applied Mechanics), Kyushu University. Good agreements between the simulation results and the experimental data confirm the validity of the developed method. Further numerical simulations are performed in a set of wind and wave conditions to investigate the effect of wave drag force on the FWT dynamics. It is found that without the fluid viscosity, resonant responses are excited in the platform motions at frequencies that are close to the natural frequencies of the FWT system. Via a comparison between the parked conditions and operating conditions of the FWT, it is found that in the presence of steady wind, the translational surge or sway motion is significantly excited at its resonance frequency. This may be attributed to the work done by the wind to the FWT, which enhances remarkably the total kinetic energy of the platform and consequently increases the translational surge or sway velocity of the platform at the equilibrium position. Applying a hybrid panel-stick model will be effective in reducing all these non-realistic large resonant responses..
18. Peiwen Cong, Bin Teng, Wei Bai, Dezhi Ning, Yingyi Liu, Wave power absorption by an oscillating water column (OWC) device of annular cross-section in a combined wind-wave energy system, Applied Ocean Research, 10.1016/j.apor.2020.102499, 107, 102499, 2021.02, [URL].
19. Junqing Ren, Peng Jin, Yingyi Liu, Jun Zang, Wave attenuation and focusing by a parabolic arc pontoon breakwater, Energy, 10.1016/j.energy.2020.119405, 217, 119405, 2021.02, [URL].
20. 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].
21. Binzhen Zhou, Jianjian Hu, Ke Sun, Yingyi Liu, Maurizio Collu, Motion response and energy conversion performance of a heaving point absorber wave energy converter, Frontiers in Energy Research, 10.3389/fenrg.2020.553295, 8, 553295, 2020.09, [URL].
22. 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].
23. Peiwen Cong, Yingyi Liu, Local Enhancements of the Mean Drift Wave Force on a Vertical Column Shielded by an Exterior Thin Porous Shell, Journal of Marine Science and Engineering, 10.3390/jmse8050349, 8, 349, 1-14, 2020.05, [URL].
24. Peiwen Cong, Yingyi Liu, Ying Gou, Bin Teng, Wave Radiation by A Submerged Ring Plate in Water of Finite Depth, China Ocean Engineering, 10.1007/s13344-019-0064-y, 33, 6, 660-672, 2019.12, [URL].
25. Siming Zheng, Yongliang Zhang, Yingyi Liu, Gregorio Iglesias, Wave radiation from multiple cylinders of arbitrary cross sections, Ocean Engineering, 10.1016/j.oceaneng.2019.05.018, 11-22, 2019.07, [URL].
26. Zhigang Zhang, Guanghua He, Zhengke Wang, Shuang Liu, Ying Gou, Yingyi Liu, Numerical and experimental studies on cloaked arrays of truncated cylinders under different wave directions, Ocean Engineering, 10.1016/j.oceaneng.2019.05.010, 305-317, 2019.07, [URL].
27. 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].
28. Junliang Gao, Jun Zang, Lifen Chen, Qiang Chen, Haoyu Ding, Yingyi Liu, On hydrodynamic characteristics of gap resonance between two fixed bodies in close proximity, Ocean Engineering, 10.1016/j.oceaneng.2018.12.052, 173, 28-44, 2019.02, [URL].
29. 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].
30. Peiwen Cong, Yingyi Liu, Ying Gou, Bin Teng, Theoretical modeling of hydrodynamic characteristics of a compound column-plate structure based on a novel derivation of mean drift force formulation, Proceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment, 10.1177/1475090218808019, 233, 4, 1022-1036, 2018.10, [URL].
31. 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].
32. 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].
33. 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].
34. 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].
35. 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].
36. 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].
37. Hongzhong Zhu, Changhong Hu, Yingyi Liu, Optimum Design of a Passive Suspension System of a Semisubmersible for Pitching Reduction, Journal of Dynamic Systems, Measurement, and Control-Transactions of the ASME, 10.1115/1.4033948, 138, 12, 121003-1-121003-8, 2016.12, [URL].
38. Junliang Gao, Chunyan Ji, Yingyi Liu, Xiaojian Ma, Oleg Gaidai, Influence of offshore topography on the amplification of infragravity oscillations within a harbor, Applied Ocean Research, 10.1016/j.apor.2017.04.001, 65, 129-141, 2017.04, [URL].
39. Junliang Gao, Chunyan Ji, Yingyi Liu, OlegGaidai, Xiaojian Ma, Zhen Liu, Numerical study on transient harbor oscillations induced by solitary waves, Ocean Engineering, 10.1016/j.oceaneng.2016.06.033, 126, 467-480, 2016.11, [URL].
40. Junliang Gao, Chunyan Ji, Yingyi Liu, Xiaojian Ma, Oleg Gaidai, Numerical study on transient harbor oscillations induced by successive solitary waves, Ocean Dynamics, 10.1007/s10236-017-1121-9, 68, 2, 193-209, 2018.02, [URL].
41. Yingyi Liu, Lin Lu, Miao Zi Zheng, Jun Huang, Bin Teng, Analysis of seabed stability and local scour around submarine pipelines under waves and current, Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science), 10.3785/j.issn.1008-973X.2012.06.026, 46, 6, 1135-1142, 2012.06.
42. Xuanlie Zhao, Dezhi Ning, Chongwei Zhang, Yingyi Liu, Haigui Kang, Analytical Study on an Oscillating Buoy Wave Energy Converter Integrated into a Fixed Box-Type Breakwater, Mathematical Problems in Engineering, 10.1155/2017/3960401, 2017, 1-9, 2017.05, [URL].
43. Junliang Gao, Chunyan Ji, Xiaojian Ma, Yingyi Liu, Oleg Gaidai, Numerical investigation of infragravity wave amplifications during harbor oscillations influenced by variable offshore topography, Ocean Dynamics, 10.1007/s10236-017-1081-0, 67, 9, 1151-1162, 2017.09, [URL].
44. Yingyi Liu, Changhong Hu, Sueyoshi Makoto, Hidetsugu Iwashita, Masashi Kashiwagi, Erratum to Motion response prediction by hybrid panel-stick models for a semi-submersible with bracings (Journal of Marine Science and Technology, (2016), 21, 4, (742-757), 10.1007/s00773-016-0390-1), Journal of Marine Science and Technology, 10.1007/s00773-016-0427-5, 22, 2, 401-402, 2017.06.
45. Junliang Gao, Chunyan Ji, Oleg Gaidai, Yingyi Liu, Numerical study of infragravity waves amplification during harbor resonance, Ocean Engineering, 10.1016/j.oceaneng.2016.02.032, 116, 90-100, 2016.04, [URL].
46. Changhong Hu, Sueyoshi Makoto, Cheng Liu, Yingyi Liu, Hydrodynamic analysis of a semi-submersible-type floating wind turbine, Journal of Ocean and Wind Energy, 1, 4, 202-208, 2014.01, [URL].
47. Junliang Gao, Chunyan Ji, Oleg Gaidai, Yingyi Liu, Xiaojian Ma, Numerical investigation of transient harbor oscillations induced by N-waves, Coastal Engineering, 10.1016/j.coastaleng.2017.03.004, 125, 119-131, 2017.07, [URL].