涡流发生器对潮流能水轮机翼型水动力学特性影响的数值模拟  

Numerical Simulation of Influence of Vortex Generator on Hydrodynamic Characteristics of Tidal Turbine Hydrofoil

作　　者：孙浩伟 谭俊哲[1,2] 刘永辉 司先才 袁鹏[1,2] 王树杰 Sun Haowei;Tan Junzhe;Liu Yonghui;Si Xiancai;Yuan Peng;Wang Shujie(College of Engineering, Ocean University of China, Qingdao 266100,China;Qingdao Municipal Key Laboratory of Ocean Renewable Energy, 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）》2022年第2期115-122,共8页Periodical of Ocean University of China

基　　金：国家重点研究发展计划项目(2018YFB1501903);山东省重点研究发展计划项目(2019GGX103012)资助。

摘　　要：为了改善潮流能水轮机叶片表面流动分离问题,提高其升阻比,本文通过在潮流能水轮机叶片表面加装涡流发生器,来研究涡流发生器对潮流能水轮机水动力学性能的影响。本文以NACA4418翼型为研究对象,分别建立了含VGs和不含VGs的三维模型,利用CFD方法研究了VGs的高度、长度以及相邻一对VGs之间的间距等多个方面对该翼型性能的影响。结果表明:VGs可以有效地提高翼型的最大升力系数;相邻VGs间距的增加对流动分离的抑制有积极影响。此外,通过对尾迹区流线和旋涡的分析,进一步揭示了尾迹区的流场特征。In order to improve the surface flow separation of hydraulic turbine blades and increase its lift-drag ratio,this paper installs a vortex generator on the surface of hydraulic turbine blades to study the effect of vortex generators on the hydrodynamic performance of hydraulic turbines.In this paper,NACA4418 hydrofoil is taken as the research object,and the three-dimensional models with VGs and without VGs are established respectively.The effects of VGs height,length and the distance between adjacent VGs on the performance of NACA4418 hydrofoil are studied by CFD method.The results show that VGs can effectively improve the maximum lift coefficient of hydrofoil,and the increase of adjacent VGs spacing has a positive effect on the suppression of flow separation.In addition,through the analysis of the streamline and vortex in the wake area,the characteristics of the flow field in the wake area are further revealed.

关 键 词：涡流发生器 潮流能水轮机 流动分离 叶片翼型 数值模拟 水动力特性 

分 类 号：TK73[交通运输工程—轮机工程]