【作者】 戚笑景； 张含策； 刘哲恺； 梁德慧； 程浩轩； 王炳南； 王达；

【Author】 Qi Xiaojing;Zhang Hance;Liu Zhekai;Liang Dehui;Cheng Haoxuan;Wang Bingnan;Wang Da;Jilin University;

【机构】 吉林大学；

【摘要】 空气动力学设计是赛车工程领域的关键技术,良好的空气动力学设计应提供足够的气动负升力、并将风压中心维持在合理位置。对于以大学生方程式(Formula SAE,FSAE)为代表的短轴距开放轮胎赛车,为提升中后部负升力,普遍采用了侧翼结构。本文针对侧翼流场涡量较大、压强较低的特点,拟利用一种百叶整流结构,降低涡量、增加压强。研究过程中通过CFD仿真优化了百叶整流结构的关键参数,探讨了侧翼升阻力对百叶各参数变化的敏感性,得到了某原型赛车的最优百叶结构特征尺寸。CFD数值计算表明,通过百叶整理机构,可以使侧翼效能提升超过10%。更多还原

【Abstract】 Aerodynamical design one of the critical technologies in race car engineering,and favourable race car aerodynamics is supposed to provide sufficient negative lift force as well as keeping Centre of Pressure(CoP) in the vicinity of Center of Mass.For short-wheelbase-open-wheel race cars,taking formula SAE cars as an example,side-wing structure is prevailingly adopted for better grip in the midback.Focusing on the specific trait of relatively high vorticity and low pressure of side-wing fluid field,this research designs a grill-like shades structure(shades),and utilizes this device to weaken vorticity and reinforce pressure.Sensitivity of side-wing aerodynamic efficiency to shades’ key parameters is analyzed,and optimized shades’ key parameters for a prototype FSAE race car are obtained through CFD simulations,whose results indicate that over 10% enhancement in side-wing aerodynamic efficiency can be achieved by applying optimized shades.更多还原