基于计算流体力学的汽车车身造型外流场分析  

External Flow Field Analysis of Automobile Body Shape Using Computational Fluid Dynamics

作　　者：黄森仁[1] 王宇[2] 刁硕 崔世海[2] 刘学龙[1] Huang Senren;Wang Yu;Diao Shuo;Cui Shihai;Liu Xuelong(China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300;College of Mechanical Engineering,Tianjin University of Science and Technology,Tianjin 300222)

机构地区：[1]中国汽车技术研究中心有限公司,天津300300 [2]天津科技大学机械工程学院,天津300222

出　　处：《汽车实用技术》2019年第24期67-69,共3页Automobile Applied Technology

摘　　要：计算流体力学(CFD)在汽车车身造型设计阶段具有重要作用。针对某SUV车型的中后期造型阶段的CAS面模型,经过几何清理和模型网格划分,构建了整车CFD计算模型。采用CFD软件STARCCM++对整车的气动阻力进行了模拟仿真计算,计算结果显示该车的空气阻力系数为0.325,在对该车型整车汽车流场分析的基础上指出了影响汽动阻力的车身关键部件,为后续汽车外形的进一步优化指出了方向。The computational fluid dynamics(CFD)is very important in the design process of vehicle dynamic shape.Based on the CAS model of a SUV styling,after geometrical cleaning and meshing,the CFD model of the whole automo-bile is developed.The aerodynamic properties of the SUV are simulated using CFD code STAR CCM+.The simulation results showed that the aerodynamic drag coefficient is 0.325.After analyzing the external flow field of the SUV,the key parameters of automobile body that influence the aerodynamic drag coefficient are figured out in order to further optimization of the automobile styling.

关 键 词：计算流体力学 汽车外流场分析 汽车空气阻力系数 气动减阻 

分 类 号：U463.82[机械工程—车辆工程]