水平轴潮流能水轮机艏摇运动水动力性能分析  

Hydrodynamic Analysis of Horizontal Axis Tidal Turbine at Yawing Motion

作　　者：张玉全[1] 赵梦晌 郑源[1] 纪仁玮 张智 臧伟 ZHANG Yuquan;ZHAO Mengshang;ZHENG Yuan;JI Renwei;ZHANG Zhi;ZANG Wei(College of Energy and Electrical Engineering,Hohai University,Nanjing 210098,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;College Of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]河海大学能源与电气学院,南京210098 [2]河海大学水利水电学院,南京210098 [3]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《工程热物理学报》2022年第5期1226-1232,共7页Journal of Engineering Thermophysics

基　　金：江苏省自然科学基金(No.BK20180504);国家自然科学基金(No.51809083);中央高校基本科研业务费专项资金资助(No.B210202059)。

摘　　要：为探究艏摇对漂浮式潮流能水轮机的影响,本文采用滑移网格模拟水轮机的艏摇和旋转运动,选用SST k-ω湍流模型对不同振幅和频率下的潮流能水轮机进行非定常模拟,在水槽试验中采用ADV测量固定式水轮机尾流场流速以验证数值模拟的准确性。研究结果表明:艏摇运动时,水轮机的水动力系数整体波动频率为艏摇频率的2倍,同时伴随着频率为叶频的高频脉动;随着艏摇振幅的增加,水轮机的平均水动力系数逐渐减小,而随着艏摇频率的增加,其平均水动力系数逐渐增大,但均小于无艏摇工况下的水动力系数;在艏摇振幅最大位置处,水轮机不同叶片的迎水面受到不同程度的水压载荷,随着振幅的增大,尾流场速度分布逐渐丢失对称性,且出现较为明显低速区摆动现象。To research the performance of yawing motion effects on the floating turbine, based on the Fluent, the yawing and rotation are simulated through the sliding mesh. The turbine at different yawing amplitudes and frequencies are researched through unsteady simulations adapting SST k-ωturbulence model, at the same time, the flume experiments and ADV are adapted to verify the accuracy of the numerical simulation, the results indicated that: the overall fluctuation frequency is twice of yawing frequency, accompanied by high frequency the same as blade frequency;As the increase of yawing amplitude, the hydrodynamic coefficient decreases slightly, as the increase of yawing frequency, the performance of the turbine increases slightly, However, they are all lower than the condition without yawing. At the maximum yawing amplitude, the different blades are suffered different hydraulic load, also as the increase of amplitude, the the velocity distribution of wake field gradually loses symmetry, and perform a relatively obvious low-speed oscillation phenomenon.

关 键 词：潮流能水轮机 艏摇运动 水动力系数 叶片载荷 

分 类 号：TK730[交通运输工程—轮机工程]