车辆会车过程的瞬态气动特性研究  

The Researh of Transient Aerodynamic Characteristics of Passing in Vehicles

作　　者：韩东艳[1] 谢金发[1] 

机构地区：[1]河南科技大学,河南洛阳471003

出　　处：《装备制造技术》2009年第5期1-2,17,共3页Equipment Manufacturing Technology

基　　金：河南省自然科学基金资助项目(082300440100)

摘　　要：应用商用CFD软件提供的动网格技术,对标准MIRI模型汽车会车过程的瞬态空气动力特性进行了数值模拟,研究了会车过程中的车辆瞬态空气动力特性,结果表明:对汽车进行瞬态空气动力学数值模拟是可行的,会车过程中两车气动力系数有显著变化,其变化幅度呈类似于正弦函数图像形式的变化趋势,会车时的空气动力作用,对汽车操作稳定性有重大影响。The moving mesh which offered by commercial computational fluid dynamics （CFD） software fluent was adopted to realize transient aerodynamic characteristics numerical simulation during the passing process. The vehicle transient aerodynamic characteristic during the passing process has been research. The simulation results show that carrying on the transient state aerodynamics value simulation to the automobile is feasible, the vehicle aerodynamic coefficient has a remarkable change in the process of passing, the change scope of aerodynamic properties have inverse proportion with the lateral spacing. The aerodynamic action when the vehicle is passing has the significant influence to the operation stability of the vehicles.

关 键 词：空气动力 会车 动网格 CFD 

分 类 号：U461.1[机械工程—车辆工程]