高速列车集电部气动噪声数值模拟

针对铁路提速后高速列车集电部气动噪声过大的问题，在集电部引入导流罩，应用FLUENT对不合导流罩及含导流罩集电部的外流场和气动噪声分别进行数值模拟和分析．流场计算采用稳态雷诺平均纳维斯托克斯（Reynolds Averaged Navier—Stokes，RANS）方法，声学模型选择边界层噪声模型．计算结果表明导流罩的设计至关重要，合理的设计能使得导流罩较好地引导气流，起到降低集电部气动噪声的作用．

Numerical simulation on aerodynamic noise of power collection equipment for high speed trains

As to the issues that the aerodynamic noise produced by the power collection equipment of high-speed trains becomes significant as the speed increase of railway,a current-guide cover is introduced into the power collection equipment,and the flow field and the aerodynamic noise of the power collection equipment are numerically simulated and analyzed using FLUENT. The flow field is calculated by the steady-state Reynolds Averaged Navier-Stokes(RANS) method and the boundary layer noise source model is selected...