噪声与振动控制2018，Vol.38Issue(z1)：348-352,5.DOI:10.3969/j.issn.1006-1355.2018.Z1.074
高速列车受电弓气动噪声分布特性及仿生降噪研究
Study on Bionic Noise Reduction and Aerodynamic Noise Distribution Characteristics for High-speed Train’s Pantographs
摘要
Abstract
As the speed of the trains increases, the impact of train noise on the surrounding environment is more and more serious. The pantographs of the high-speed trains are located on the roof of the vehicles. Their aerodynamic noise is one of the main sources of noise of the high-speed trains. In this paper, the simulation analysis model of fluid and aerodynamic noise of a typical pantograph structure was built. The distribution characteristics of the flow field and the magnitude of the aerodynamic noise were calculated by the method of large eddy simulation. According to the results of simulation analysis, the mechanism of the aerodynamic noise of the pantographs was studied. On this basis, the bionic structure of the flange was introduced to optimize the current pantograph structure. The results show that the optimized pantograph can effectively reduce the amount of pantograph tail vortex shedding and the aerodynamic noise. Meanwhile, its wideband noise performance and aerodynamic performance are good. In addition, the optimized pantograph raises the contact force between the bow and the net and reduces the possibility of network jumping, which is helpful to the stability of the flow. These conclusions have certain engineering reference values.关键词
声学/受电弓,流场分析,大涡模拟,气动噪声,仿生降噪Key words
acoustics/pantograph/flow distribution analysis/large eddy simulation/aerodynamic noise/bionic noise reduction分类
交通工程引用本文复制引用
王洋洋,周劲松,宫岛,刘海涛..高速列车受电弓气动噪声分布特性及仿生降噪研究[J].噪声与振动控制,2018,38(z1):348-352,5.基金项目
国家自然科学基金资助项目(51765017) （51765017）
江西省自然科学基金资助项目(20161BAB216136) （20161BAB216136）
江西省教育厅科技资助项目(GJJ150497) （GJJ150497）
