Vehicle Aerodynamics

Typical structures seen in the flow around passenger cars.<br>(1) Flow_Diagram_Fig_1.emfFlow over the front end of an SUV illustrated by surface static pressure and flow streamlines coloured by velocity magnitude, from a commercial Lattice Boltzmann based CFD solver (Exa PowerFLOW). Main features include: plenum vortex, a-pillar vortex, wind screen flow and door mirror wake.乘用车外流场中常见的典型流动结构。 (1) Flow_Diagram_Fig_1.emf：本图依托基于格子玻尔兹曼（Lattice Boltzmann）方法的商用计算流体动力学（Computational Fluid Dynamics, CFD）求解器Exa PowerFLOW，对运动型多用途汽车（Sport Utility Vehicle, SUV）前端的外流场进行可视化，通过表面静压分布与按速度幅值着色的流动流线进行展示。其主要流动特征包括：进气腔涡、A柱涡、挡风玻璃流场与外后视镜尾流。