SUV电动汽车后扰流板开槽对气动性能的影响研究

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关键词：SUV电动汽车；后扰流板；CFD数值模拟；阻力系数；升力系数中图分类号：U469 收稿日期：2025-05-12 DOI： 10.19999/j.cnki.1004-0226.2025.08.014

Study on the Effect of Rear Spoiler Slotting on Aerodynamic Performance of SUV Electric Vehicles

Pan Faxing Sichuan Vocational College of Information Technology，Guangyuan 628ooo，China

Abstract：ThisstudyfocusesonSUVelectricvehiclesandemploysCFDsimulationmethodstoinvestigatetheimpactofrearspoilerslotingonveicleaerodynamicperformance.A1：1thre-dimensionalvehiclemodelwasestablishedwithappropratelydefiedcomputationaldomainsandboundaryconditions，simulatingaerodynamicperformanceundertworearspoilerconfigurations：no-sloted andslotedstructures.Theresultsindicatethatsquaresloting inthrearspoilerdoesnotreducevehicledragorift.Specifically，a 280mm square slot in the middle of the spoiler increased the drag coefficient and lift coefficient by 5.1% and 369.6% ，respectively.For three evenly distributed 140mm square slots，these coefficients rose by 14.2% and 176.1% ，respectively. This is primarily attributed to thesharpgeometric edges ofthe square slots，which easily induce flow separation and increase turbulent energy dissipation.

KeyWords：SUV electric vehicle;Rear spoiler;CFD numerical simulation;Drag coefficient;Liftcoefficient

1前言

近年来，全球能源危机与环境污染问题日益加剧，在此背景下，新能源汽车特别是纯电动汽车（BatteryElectricVehicle，BEV）的研发与应用，成为汽车工业转型的核心方向。（剩余3629字）