Numerical analysis of aerodynamic noise around a high-speed pantograph

摘要：

　　The aerodynamic noise of pantograph is one of the most important noise sources around high speed trains.In this paper,the distribution of dipole sound sources at the surface of a single-arm pantograph and the noise radiation from it at the speed of 300 km/h are predicted numerically by the combination of incompressible fluid flow analysis using the finite element method(FEM)and acoustic analysis using the boundary element method(BEM).The objectives of this calculation are to locate the noise sources on the surface of this type of pantograph and to understand the mechanism of the aerodynamic noise radiation.The analysis results indicate that: the aerodynamic noise of the high-speed pantograph is induced by the vortex shedding; the main noise sources of this single-arm pantograph are the pantograph head,knee,arms around knee and foot region; the aerodynamic noise of this type of pantograph is mainly the low-frequency and mid-frequency noises.

关键词： high speed train pantograph aerodynamic noise computational fluid dynamics (CFD) boundary element method (BEM)

作者: Shi Lei Zhang Chengchun

作者单位: Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University,Changchun 130022,China

会议类型: 国内会议

会议名称: 2016 Siemens PLM Software 仿真与试验技术大会

会议地点: 大连

会议语种:英文

页码: 1-6

在线出版日期: 2016-07-11（万方平台首次上网日期，不代表论文的发表时间）