基于车轮的整车气动减阻的研究

摘要

针对国内某运动型多用途汽车(SUV)，采用均匀设计方法，应用计算流体力学(CFD)技术，进行了车轮气动减阻研究．研究发现：使用均匀设计方法基于车轮的气动减阻能够有效地降低整车气动阻力系数，降幅可达15.9%，；前轮阻流板宽度对于针对车轮气动减阻的气动阻力系数的影响最大，前轮、后轮阻流板高度、宽度，轮辋面积对气动阻力系数存在不同的影响趋势．%The computational fluid dynamics technology and the uniform design approach were applied to the research on car aerodynamics drag reduction for a sports utility vehicle(SUV).The research shows that the use of uniform design method based on wheels for aerodynamics drag reduction can effectively reduce car aerodynamic drag coefficient,a decline of up to 15.9%,.The width of the front wheel spoiler is the largest contribution to aerodynamic drag coefficient based on wheels.As to the affecting aerodynamic drag coefficient,the weight,the width and the rim area of the front wheel spoiler are different from those of the rear wheel spoiler.