FlowVision在轮胎噪声仿真中的应用

Based on FlowVision simulation software，the fluid-structure interaction method was used to numerically simulate the near-field noise of a tire.The flow field visualization results showed the motion of the flow field around the rolling tire.Comparing the near-field noise simulation with the experimental sound pressure level results，it was found that the experimental and simulation results had obvious directivity.The error of peak frequency between the simulation results and the test results in the 90° direction was only 4～8 Hz，and the test，simulation and theoretical calculation results had good consistency.     

基于四极子声源的轮胎管腔共振噪声研究

基于流固耦合仿真,应用计算气动声学方法对轮胎管腔共振噪声进行研究。滚动轮胎引起周围流体微粒间的相互作用被视为分散的四极子声源,基于Lighthill理论进一步求解并分析近场噪声和声学特性。通过对比接地前端、接地后端和胎侧位置声源的声辐射结果和频谱特性,验证了轮胎管腔共振噪声的产生机理。