噪声与振动控制2016，Vol.36Issue(2)：158-161,193,5.DOI:10.3969/j.issn.1006-1335.2016.02.035
大型风力机气动噪声仿真与分析
Simulation and Analysis of Aerodynamic Noise of a Large Wind Turbine
摘要
Abstract
A three-dimensional model of a 2 MW wind turbine was established by Pro/E. The flow field and sound field of the turbine were simulated by Fluent. The unsteady flow field of the wind turbine was solved by the Large Eddy Simulation (LES) and the vortex intensity and the streamlines were obtained. Finally, the aerodynamic noise was calculated by FW-H acoustic model. The results show that the vortex intensity and sound pressure pulsation gradually increase from the root to the tip of the blade and reach the maximum at the tip of the blade. The tip region is the main noise source of the wind turbine. The leeward of the rotor have the stronger vortex intensity and sound pressure pulsation than the windward, so that the synthetic sound power level of leeward is higher than that of windward when the leeward and windward of the rotor are of the same distance from the wind turbine. Tower-shadow effect is an important part of the aerodynamic noise, and the aerodynamic noise is mainly the middle or low frequency noise.关键词
声学/风力机/气动噪声/大涡模拟/塔影效应/漩涡强度/中低频噪声Key words
acoustics/wind turbine/aerodynamic noise/large eddy simulation/tower-shadow effect/vortex intensity/middle and low frequency noise分类
通用工业技术引用本文复制引用
韩宝坤,孙晓东,鲍怀谦,宋明超..大型风力机气动噪声仿真与分析[J].噪声与振动控制,2016,36(2):158-161,193,5.基金项目
山东省自然科学基金资助项目 （）
