离地间隙对轿车气动升力影响的数值研究  

Numerical study on effects of a car model’s ground clearance on aerodynamic lift

作　　者：孙同贺 孙同庆 闫国庆[3] SUN Tonghe;SUN Tongqing;YAN Guoqing(Mining and Coal Institute,Inner Mongolia University of Science and Technology,Inner Mongolia Autonomous Region,Baotou 014010,Inner Mongolia,China;Volkswagen Automatic Transmission Tianjin,Tianjin 300462,China;Laboratory and Equipment Administration Department,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古科技大学矿业与煤炭学院,内蒙古自治区包头市014010 [2]大众汽车自动变速器(天津)有限公司,天津市300462 [3]内蒙古科技大学实验室与设备管理处,内蒙古自治区包头市014010

出　　处：《农业装备与车辆工程》2023年第10期144-146,共3页Agricultural Equipment & Vehicle Engineering

摘　　要：气动升力的变化直接影响着汽车的行驶安全,因此研究离地间隙对轿车气动升力的影响有重要意义。基于CFD技术,利用Fluent软件,仿真模拟分析不同的离地间隙(140、120、100 mm)对轿车气动升力、路面载荷和附着力的影响。结果表明:离地间隙从100 mm增加到140 mm过程中,气动阻力逐渐增加,路面载荷逐渐增加,附着力逐渐减小。The change of automotive aerodynamic lift directly affects the safety of the automotive.Therefore,research on the influence of ground clearance on automotive aerodynamic lift is of great significance.Based on CFD technology,the effects of a car model’s different ground clearance(140,120,100 mm)on the aerodynamic lift,road load and adhesion were simulated and analyzed with Fluent software.The results showed that the aerodynamic resistance and road load gradually increased,and the adhesion gradually decreased with the ground clearance from 100 mm to 140 mm.

关 键 词：离地间隙 轿车 气动升力 Fluent软件 

分 类 号：U461[机械工程—车辆工程]