摘要
在传统汽车风洞数值模拟的基础上引入侧风阵风模型,对阶背式MIRA模型在自然侧风下的风阻、压力场、外流场等表现进行了数值模拟仿真研究。研究结果表明,随着侧风风速的增加,车身表面逐渐产生较大的压力分布变化,且尾部附着涡系逐渐变复杂,均匀流起始位置逐渐向后移动,为侧风工况下的车身表面及结构优化提供了参考。
This paper introduces numerical simulation of traditional automotive wind tunnel with natural side wind model on the notchback MIRA model in natural crosswind gust under wind resistance,pressure field,flow field and performance of simulation and numerical simulation.The results of the study show that the pressure distribution on the body surface gradually changes largely with the increase of wind speed,and the tail attachment vortex becomes complex,uniform flow starting position gradually moves back.This paper provides the reference to the body surface and structure optimization of natural side wind conditions.
作者
杨彬
Yang Bin(School of Mechanical Engineering,Hefei University of Technology,Hefei City,Anhui Province 230009,China)
出处
《农业装备与车辆工程》
2019年第2期39-43,53,共6页
Agricultural Equipment & Vehicle Engineering
关键词
汽车风洞
数值计算
自然侧风
外流场
automotive wind tunnel
numerical calculation
natural side wind
outer flow field
