浮式水平轴潮流能水轮机横摇艏摇耦合运动水动力性能分析  

Analysis of Hydrodynamic Performance of Floating Horizontal Tidal Turbine at Roll and Yaw Coupled Motion

作　　者：彭斌 郑源[2] 张玉全[2] 赵梦晌 唐庆宏 张震 PENG Bin;ZHENG Yuan;ZHANG Yuquan;ZHAO Mengshang;TANG Qinghong;ZHANG Zhen(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,Jiangsu Province,China;College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,Jiangsu Province,China;Scholl of Marine Engineering and Technology,Sun Yat-sen University,Zhuhai 528478,Guangdong Province,China)

机构地区：[1]河海大学水利水电学院,江苏省南京市210098 [2]河海大学能源与电气学院,江苏省南京市211100 [3]中山大学海洋工程与技术学院,广东省珠海市528478

出　　处：《中国电机工程学报》2023年第12期4631-4638,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52171257)。

摘　　要：浮式潮流能装置的水轮机会随着与之刚性连接的载体在波浪作用下发生六自由度运动。为了研究横摇和艏摇耦合运动对其影响,采用滑移网格技术实现无界均匀流环境下水轮机在不同频率下横摇艏摇同频同幅耦合运动的非定常模拟,在网格无关性验证的基础上,将数值模拟的结果与水槽试验中扭矩传感器测量值对比来验证数值模拟结果的准确性。结果表明:水轮机的能量利用系数和轴向载荷系数平均值相比于无摇时分别约减小0.035和增大0.02,瞬时值出现周期波动且波动规律与仅发生艏摇运动时基本一致,当耦合运动频率为2 rad/s时,能量利用系数和轴向载荷系数瞬时值的变化幅度分别约为8.6%和5.9%;叶轮正面和背面压力出现不均匀分布且在平衡位置处最为严重,尾流场低速区和高涡量区域出现明显摆动,近尾流区的速度恢复加快但远尾流区域速度恢复变慢。The floating tidal current turbine generates motions of six degrees of freedom in response to the effects of waves on the rigidly connected platform to investigate the influence of the yaw and roll coupled motion,and the slip-grid technique is adopted to realize the yaw and roll coupled motion with different frequencies.The accuracy of the numerical simulation is validated by comparing simulation results with the experimental data obtained in flume tests.The results show that the average values of energy utilization and axial load coefficients decrease by about 0.035 and increase by 0.02 respectively,and the instantaneous values show periodic fluctuations with basically the same regularity as that when yaw motion occurs in isolation.When the motion frequency is 2rad/s,the fluctuation amplitude of energy utilization and axial load coefficients are about 8.6%and 5.9%respectively.Uneven distribution of pressure is observed at the suction and pressure face of blades,especially at the equilibrium position.The low speed and high vorticity magnitude areas show significant oscillation,and the velocity recovery in the near wake is accelerated but slows down in the far wake.

关 键 词：潮流能水轮机 水动力载荷 耦合运动 流场特性 浮式水平轴 水槽试验 

分 类 号：TK730[交通运输工程—轮机工程]