试验场瞬态风环境气流特性研究  

Study on Transient Wind Characteristics in Test Sites

作　　者：刘漫 陈龙 黄宪波 罗泽敏 胡正权 Liu Man;Chen Long;Huang Xianbo;Luo Zemin;Hu Zhengquan(GAC R&D Center,510000)

机构地区：[1]广州汽车集团股份有限公司汽车工程研究院,广州510000

出　　处：《汽车工程师》2025年第2期30-34,共5页Automotive Engineer

摘　　要：为研究试验场实际道路瞬态风环境气流特性,在实车和道路侧安装风环境参数采集设备,采集了琼海试验场、盐城试验场直线性能路风环境参数,包括风速、偏航角、湍流强度、湍流积分尺度等,分析结果表明,试验场气流特性与仿真环境和风洞实验室的气流特性存在明显差异,试验场风速波动范围为±4 m/s、偏航角波动范围为±5°,满足标准正态分布,湍流强度为2%~10%,湍流积分尺度为2~20 m,脉动风速谱基本满足冯·卡门(von Kármán)湍流谱。By installing the four-hole probe on the hood of a vehicle and some pressure taps on the surface of the vehicle to collect the wind flow parameters such as velocity,yaw angle,turbulent intensity,turbulent length scale,spectra etc..In this study,transient wind characteristics on two test sites(Hainan Automobile Proving Ground and Yancheng Automobile Proving Ground)are investigated.The results showed that there are significant differences in the wind flow characteristics between the test site and wind tunnel experiments and numerical simulations.The wind velocity in the test site fluctuates within the range of±4 m/s,the yaw angle fluctuates between-5°and 5°,and the yaw angle distribution follows the standard normal distribution,the turbulence intensity is almost in the range of 2%~10%,the turbulent length scale is 2~20 m,and the measured spectra show a good correlation to the empirical von Kármán spectra.

关 键 词：瞬态风环境 偏航角 湍流强度 湍流积分尺度 脉动风速谱 

分 类 号：U467.5[机械工程—车辆工程]