基于简化车身模型的后视镜气动和声学特性多方案仿真对比研究

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关键词：气动-声学；风阻系数；声学性能；后视镜选型中图分类号：U461.1；U462.3 收稿日期：2025-12-21 DOI:10.19999/j.cnki.1004-0226.2026.04.004

Multi-scheme Simulation and Comparative Study on Aerodynamic and Acoustic Characteristics of Side-view Mirror Based on Simplified Vehicle Body

Zhu FawangWu Gongchuan Sun Yu GreatWallMotor New Energy Commercial Vehicles Co.,Ltd.,Baoding O71000,China

Abstract:Addresing theneedforoptimizingaerodynamicdragandwindnoise incommercialvehiclesduring high-speeddriving， thispaperpresentsarapidevaluationmethodforrearviewmirroraerodynamic-acousticperformancebasedonasimplifiedvehiclebody model.ByconstructingasimplifiedcabmodelthatretainskeyaerodynamicandacousticeaturessuchasthA-pillr，sidewindows， androof,andbyestablisngaonewaycoupledaerodyamic-acousticsimulatioprocesstosimultaneouslyassessthedragccients andsoundpressurelevelsintheside-windowregionforfourrearviewmirrorconfigurations（M1~M4).TheresultsrevealthattheM4 design excels in both drag coefficient( Cd=0.415 ）and acoustic performance（average total sound pressure level of 122.61 dB at the side-windowmonitoringpoint），thankstoitssmalerwakevortexstructureandmoreuniformturbulentkineticenergydistrution， whichsignificantlyeducestheintensityoferodynamicnoisesources.Thisresearhprovidesaneficientandelablesimulatio-based decision-makingtoolforselectingrearviewmirrors incommercial vehicles，enablingrapiditerationandperformanceoptimization across multiple design options.

Key words:Aerodynamic-acoustic;Drag coeficient;Acoustic performance;Selecting rearview mirrors

1前言

针对高速运输场景货运车辆，整车所受阻力主要来源于滚动阻力和气动阻力。（剩余9939字）