提出一种旋转浮子式波浪能捕获装置,并进行一系列物理模型试验来研究其在规则波作用下的水动力行为特性。试验研究发现：1）浮子旋转角速度随螺距的增大而减小。2）入射波周期小于2.4 s时,平均角速度随入射波周期的增加呈增大趋势;入射波周期大于2.4 s时,随着入射波周期的增加,平均角速度增幅趋缓,个别工况呈轻微减小的趋势。3）波能捕获宽度比与入射波周期基本呈正相关关系。波能捕获宽度比随螺距的减小而增大;在螺距δ=0.02、入射波周期T=2.4s时,波能捕获宽度比达到最大。最后,利用量纲分析方法,推导旋转浮子的平均角速度方程,并利用试验数据对其进行验证。
Abstract
A rotating buoy wave energy capture device was proposed, and a series of physical model tests were carried out to study its hydrodynamic behavior under regular waves. The experimental results show that： （1） The angular velocity of rotational buoy decreases with the increase of the pitch of screw. （2） When the period of the incident wave is smaller than 2.4 s, the average angular velocity increases with the increase of wave period; When the period of the incident wave is higher than 2.4 s, the increasing amplitude of average angular velocity decreases with the increase of wave period, and even the average angular velocity decreases for a small proportion of scenarios. （3） The capture width ratio is basically positively correlated with the wave period. The capture width ratio increases with the decrease of the pitch of screw. When δ=0.02 and T=2.4 s, the capture width ratio reaches the maximum value of 22.65%. Finally, the dimensional analysis method was used to derive the average angular velocity equation, which is verified well by the experimental data.
关键词
规则波 /
波浪能 /
旋转浮子 /
角速度 /
捕获宽度比
Key words
regular waves /
wave energy /
rotating buoy /
angular velocity /
capture width ratio
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参考文献
[1] IUPPA C, CONTESTABILE P, CAVALLARO L, et al.Hydraulic performance of an innovative breakwater for overtopping wave energy conversion[J]. Sustainability, 2016, 8(12): 1-20.
[2] VICINANZA D, MARGHERITINI L, KOFOED J P, et al.The SSG wave energy converter: performance, status and recent developments[J]. Energies, 2012, 5(2): 193-226.
[3] BUDAL K, FALNES J.The Norwegian wage-power buoy project[C]//Proceedings of 2nd International Symposium on Wave Energy Utilization, Trondheim, 1982: 323-344.
[4] NIELSEN K, SMED P F.Point absorber-optimization and survival testing[C]//Proceedings of 3rd European Wave Energy Conference, Patras, Greece, 1998: 207-214.
[5] CRUZ J, PRADO M.Ocean wave energy[M]. Berlin: Springer, 2008: 297-304.
[6] WATERS R, STALBERG M.Experimental results from sea trials of an offshore wave energy system[J]. Applied physics letters, 2007, 90(3): 90-93.
[7] 高人杰. 组合型振荡浮子波能发电装置研究[D]. 青岛: 中国海洋大学, 2012.
GAO R J.Research on combined oscillating float wave energy power generation device[D]. Qingdao: Ocean University of China, 2012.
[8] 史宏达, 黄波峰, 田会元. 基于动力特性的振荡浮子发电装置系泊优化设计研究[J]. 中国海洋大学学报(自然科学版), 2019, 49(10): 133-139.
SHI H D, HUANG B F, TIAN H Y.Research on optimal design of mooring of oscillating float power plant based on dynamic characteristics[J]. Journal of Ocean University of China(natural science edition), 2019, 49(10): 133-139.
[9] YUE H, MIKAEL E, CECILIA B, et al.Impact of generator stroke length on energy production for a direct drive wave energy converter[J]. Energies, 2016, 9(9): 730.
[10] BABARIT A.A database of capture width ratio of wave energy converters[J]. Renewable energy, 2015, 80(8): 610-628.
基金
国家自然科学基金（51879251; 51579229）; 广州市珠江科技新星专项（201806010164; 201906010023）
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