Hydrodynamic and wave energy conversion characteristics of perforated double-floating body device
ZHOU Yahui1, YANG Xinglin1, ZHOU Xiaoguo2, ZHANG Wanchao2
1.College of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
2.College of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
Abstract:To further solve the problems of system stability and energy conversion efficiency in the development of wave energy utilization to deep water, the perforated damping plate is considered based on the existed point-absorber wave energy converter in this paper. A new structural form of dual-buoy with supported column and perforated plate is proposed. Based upon the hypothesis of linear micro-amplitude wave theory, the influence of the perforated damping plates and the variation of configuration parameters on the hydrodynamic, motion and power conversion efficiency of the system are explored by means of the semi-analytical method of eigenfunction expansion and boundary matching and the multi-degree-of-freedom vibration theory. The results show that the opening of the damping plate will reduce the wave excitation force on the float. The float, the damping plate and the coupling radiation force will decrease with the increase of the opening radius of the damping plate. Its increase can also promote the relative motion of float and damping plate. The damping plate will make the system appear two coupling resonance frequencies. The optimal wave energy conversion efficiency at the smaller resonance frequency increases first and then decreases with the increase of the opening radius of the damping plate. The research results can provide a theoretical foundation for the engineering application of wave energy utilization in deep water, and provide a basis for the optimization of oscillating-buoy wave energy converters.
周亚辉1,杨兴林1,周效国2,张万超2. 穿孔式双浮体装置水动力及波能转换特性研究[J]. 振动与冲击, 2021, 40(5): 211-217.
ZHOU Yahui1, YANG Xinglin1, ZHOU Xiaoguo2, ZHANG Wanchao2. Hydrodynamic and wave energy conversion characteristics of perforated double-floating body device. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(5): 211-217.
[1] 覃岭, 吴必军. 复杂圆柱型波能装置振动特性研究[J]. 振动与冲击, 2010, (4): 188-192.
Qin Ling, Wu Bi-jun. Research on Vibration characteristics of complex cylindrical wave energy device [J]. Journal of Vibration and Shock, 2010, (4): 188-192.
[2] 肖晓龙,肖龙飞,李扬.基于非线性能量俘获机制的直驱浮子式波浪能发电装置研究[J]. 振动与冲击, 2018, 37(02): 156-162.
Xiao Xiao-long, Xiao Long-fei, Li Yang. A directly driven floater type wave energy converter with nonlinear power-take-off mechanism in irregular waves [J]. Journal of Vibration and Shock, 2018, 37(02): 156-162.
[3] 刘洪权, 闫明. 新型缓冲阻尼器设计及其冲击响应特性研究[J]. 振动与冲击, 2020, 39(4): 291-298.
Liu Hong-quan, Yan Ming. Design of a retrofitted damper and its shock response characteristics [J]. Journal of Vibration and Shock, 2020, 39(4): 291-298.
[4] Falcao AFO. Wave energy utilization: A review of the technologies [J]. Renewable and Sustainable Energy Reviews, 2010, 14: 899-918.
[5] Caraher SL, Chick JP, Mueller MA. Investigation of fluid film bearings for use in direct drive linear generators in submerged wave energy converters[C]. 18th International Offshore and Polar Engineering Conference, Vancouver, Canada, 2008. 409-16.
[6] Ciement A, Mccullen P, Wave energy in Europe: current status and perspectives [J]. Renewable and Sustainable Energy Reviews, 2002, 6: 405-431.
[7] 苏斌. 浮体绳轮波浪发电机的研究[D]. 山东大学, 2015.
Su Bin. Research on the generator of buoy-rope-drum wave power device [D]. Shandong University, 2015.
[8] Cavaleri L, Mollo CE. Wave response of a spar buoy with and without a damping plate [J]. Ocean Engineering, 1981, 8(1): 17-24.
[9] Lake M, He H, et al. Hydrodynamic coefficient estimation for TLP and spar structures [J]. Journal of Offshore Mechanics and Arctic Engineering, 2000, 122(2): 118-124.
[10] Li Jinxuan, Liu Shuxue, et al. Experimental investigation of the hydrodynamic characteristics of heave plates using forced oscillation [J]. Ocean Engineering, 2013, 66: 82-91.
[11] Falnes J. A review of wave-energy extraction [J]. Marine Structures, 2007, 20(4): 185-201.
[12] Ruehl K, Michelen C, et al. Preliminary verification and validation of WEC-sim, an open-source wave energy converter design tool[C]. 33rd International Conference of Ocean, Offshore Arctic Engineering, California, USA, 2014: 1-7.
[13] Davis AF, Thomson J, et al. Modeling and analysis of a multi degree of freedom point absorber wave energy converter[C]. The 33rd International Conference of Ocean, Offshore Arctic Engineering, California, USA, 2014.
[14] Ebner J. Dynamics of a tension force-driven wave energy converter [D]. Durham: University of New Hampshire, 2014.
[15] Beatty SJ. Self-reacting point absorber wave energy converters [D]. University of Victoria, 2015.
[16] Mundon TR. Progress in the hydrodynamic design of heave plates for wave energy converters [C]. International Conference of Ocean Engineering, Edinburgh, U.K., 2016: 1-15.
[17] Zhang SN, Ishihara T. Numerical study of hydrodynamic coefficients of multiple heave plates by large eddy simulations with volume of fluid method [J]. Ocean Engineering, 2018, 163:583-598.
[18] Brown A, Thomson J, Rusch C. Hydrodynamic coefficients of heave plates with application to wave energy conversion [J]. IEEE Journal of Oceanic Engineering, 2018, 43(4): 983- 996.
[19] 张万超. 轴对称垂荡浮子式波能装置水动力及能量转换解析研究[D].哈尔滨工程大学, 2017.
Zhang Wan-chao. Analytical solution of hydrodynamic force and energy conversion for axisymmetric heave-buoy wave power devices [D]. Harbin Engineering University, 2017.