流体机械2016，Vol.44Issue(6)：11-16,6.DOI:10.3969/j.issn.1005-0329.2016.06.003
小型垂直轴风力发电机的气动噪声数值模拟与试验验证
Numerical Simulation and Analysis of Aerodynamic Noise Based on Small Vertical Axis Wind Turbine
摘要
Abstract
The mechanism of the noise produced by the small vertical axis wind turbine is analyzed in order to reduce its aero-dynamic noise.At first,in the transient calculation,the large eddy simulation(LES)model is used to analyze the flow field around the three dimensional wind wheels under a certain working condition;Secondly,in the acoustic calculation,the FW-H equation is used to analyze the aerodynamic noise generated by the wind wheels in order to get the spectrum.Finally,the method is proved to be effective in predicting the aerodynamic noise.The results show that the aerodynamic noise produced by the small vertical axis wind turbine is mainly the vortex noise;the peak value of sound pressure level decreases with the increase of the radius of the ro-tation axis of the wind wheel;and its noise has the directivity at the plane perpendicular to the rotation axis of the impeller.The aerodynamic noise analysis of small vertical axis wind turbine provides the basis for the optimization of its low noise.关键词
小型垂直轴风力发电机/气动噪声/FW-H 方程Key words
small vertical axis wind turbine/aerodynamic noise/FW-H equation分类
机械制造引用本文复制引用
刘希昌,莫秋云,李帅帅,严顺康,施军建..小型垂直轴风力发电机的气动噪声数值模拟与试验验证[J].流体机械,2016,44(6):11-16,6.基金项目
国家自然科学基金地区基金项目（51465010）；广西制造系统与先进制造技术重点实验室主任课题（14－045－15－010Z）；桂林电子科技大学研究生教育创新计划资助项目（GDYCSZ201405）；2015年度桂林电子科技大学北海校区青年教师基础能力提升计划项目 （）
