摘要
针对潮流能水轮机发电效率较低的问题,该文将格尼襟翼(Gurney flap,GF)流动控制理论引入潮流能水轮机叶片设计领域来改善水轮机叶片的水动力学性能,并开展GF及其参数对水轮机叶片水动力学特性的影响规律的研究。以NACA4418翼型作为研究对象,分别对基础翼型段和带GF的水轮机叶片翼型段建立三维模型,应用CFD数值模拟方法,研究了不同GF高度、弦向位置以及偏转角度对叶片翼型水动力学性能的影响。结果表明:翼型段上安装格尼襟翼能够有效提高升力系数,合理的GF参数设置可以有效地改善翼型段的水动力学性能,该研究中当GF安装在尾缘处且高度为3%C(C为弦长)、偏转角度为90°时,对翼型段改善效果最佳,其最大升力系数增加60.51%。
In order to solve the problem that the power efficiency of tidal turbine is a low,Improving the hydrodynamic performance of the tidal turbine blade is one of the research highlights in the field of tidal energy.In this paper,it is proposed to introduce the flow control theory of Gurney flap(GF)to the design of tidal turbines,improve the hydrodynamic performance of the blade and study the influence of GF on the hydrodynamic performance of the turbine blades.NACA4418 hydrofoil is taken as the research object,and the three-dimensional models of turbine blade hydrofoil with GF and without GF are established respectively.The effects of different GF height,chord position and deflection angle on the hydrodynamic performance of NACA4418 hydrofoil are studied by using CFD method.The results show that GF can effectively increase the lift coefficient.Rational GF parameter settings should be adopted to improve the hydrodynamic performance of hydrofoil.In this study,the best improvement effect is the obtained when GF is installed at the trailing edge with the height of 3%C(C is chord length)and the deflection angle of 45°.The accuracy of the simulation model is verified by flume test,and the maximum lift coefficient is increased by about 60.51%.
作者
刘永辉
裴振
者浩楠
谭俊哲
袁鹏
薛宇
Liu Yonghui;Pei Zhen;Zhe Haonan;Tan Junzhe;Yuan Peng;Xue Yu(College of Engineering,Ocean University of China,Qingdao 266500,China;Engineering Training Center,Ocean University of China,Qingdao 266100,China;Ocean Engineering Key Laboratory of Qingdao,Ocean University of China,Qingdao 266100,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第10期74-82,共9页
Periodical of Ocean University of China
基金
山东省自然科学基金项目(ZR2021ME095)
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。
