【摘要】 文章对某小型SUV车进行空气动力学性能开发和优化,以期将风阻降到最小。采用了CFD数值模拟和风洞试验验证相结合的方法,利用STAR-CCM+软件,从不带底盘和机舱的简化车模型到实车模型进行两轮的仿真分析优化,最终实车通过在前保险杠下部添加前阻流板、封闭部分前格栅及发动机机舱冷却前端模全密封等优化措施,并经过风洞试验验证,整车风阻降低5%,实车风阻系数测试值达0.38,达到了项目的空气动力学性能目标。更多还原

【Abstract】 The purpose of this paper is to improve aerodynamics performance and make wind drag drop to the minimum. CFD using STAR-CCM+ software and wind tunnel test method to analyze and optimize the small SUV simple and real CFD model is introduced in the paper. The aerodynamic drag of vehicle is reduced 5% and Cd is 0.38 obtained from wind tunnel test by adding a front spoiler lips, closing part of the front grille and total closure of cooling module including condenser and radiator, achieving the target of aerodynamic performance.更多还原