偏航工况下潮流能水轮机性能及尾流场特性分析  

Performance and Wake Characteristics Analysis for Tidal Turbine with Yaw Angle

作　　者：王树杰[1,2] 姜雪英 袁鹏 司先才[1,2] 于晓丽 WANG Shu-Jie;JIANG Xue-Ying;YUAN Peng;SI Xian-Cai;YU Xiao-Li(Engineering of College,Ocean University of China,Qingdao 266100,China;Ocean Engineering Key Lab of Qingdao,Qingdao 266100,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]青岛市海洋可再生能源重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2019年第12期122-128,133,共8页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(51479185);山东省重点研发计划项目(2015GSF115019)资助~~

摘　　要：潮流能发电机组在工作中,水轮机与潮流流向之间的偏航角对于机组的性能有较大影响。基于ANSYS Fluent软件采用SST k-ω湍流模型和滑移网格旋转模型对不同偏航角下水轮机进行数值模拟,分析偏航工况下水轮机性能及尾流场特性,并进行试验验证。结果表明:随着偏航角的增大,轴向力系数与功率系数降低,尾流场流速变化不对称现象趋于明显,同时造成周围流场湍流强度增大。The yaw angle between the orientation of turbine and direction of tidal stream has remarkable influence on performance of the tidal turbine.In this paper,turbine’s performance and wake characteristics are simulated by ANSYS Fluent using the SST k-ωturbulence model and sliding grid rotation model.The numerical results are validated by the experiment data.The results show that the axial force coefficient and the power coefficient are reduced with the increase of the yaw angle.In this case,the asymmetry of wake velocity change becomes more and more evident.It was also observes the turbulence intensity of the surrounding flow field with yaw angle.

关 键 词：ANSYS FLUENT 滑移网格旋转模型 偏航工况 水轮机性能 尾流特性 

分 类 号：TK73[交通运输工程—轮机工程]