某型越野车外流场有限元分析

Finite element analysis of a certain type of go-anywhere vehicle＇s external flow field

本文基于有限元分析软件Fluent对某型越野车进行外流场有限元分析，给出整车在最高车速的风阻系数及整车的流场结构和尾流场的涡系结构。为早期车身气动外形的初选提供依据，方便直观地了解汽车外流场情况和尾部涡系结构及分布情况，显著地缩短了设计周期，并降低了设计成本。

This paper analyzes a certain type of go-anywhere vehicle＇s external flow field based on finite element analysis software Fluent, gives the drag coefficient and the flow field structure and the vortex structure of the wake at the highest speed. It is convenient and intuitive to understand the car flow field and the structure and distribution of the trailing vortex, which significantly shorten the design cycle, and reduce the design cost.