某新能源厢式货车导流罩外流场对比分析  

Comparative Analysis of Outflow Field of Van Guide Cowl

作　　者：胡志雯 吴庆捷 刘欣成 金显哲 周亮 何周光 罗旭 Hu Zhiwen;Wu Qingjie;Liu Xincheng;Jin Xianzhe;Zhou Liang;He Zhouguang;Luo Xu(Nanchang Hangkong University,School Of Aeronautical Manufacturing Engineering,Jiangxi Nanchang 330069)

机构地区：[1]南昌航空大学航空制造工程学院

出　　处：《汽车实用技术》2020年第3期21-23,共3页Automobile Applied Technology

基　　金：南昌航空大学第十四届三小项目2019HZ039

摘　　要：为了获取某厢式货车加装导流罩前后的外流场特性,基于RNG k-ε模型并且对整车模型简化处理,获取了整车的速度矢量图、静压图和流线图,由分析结果可知,当未加装导流罩时,车厢的正面压力约为500Pa,其风阻系数为0.685。当加装导流罩时,导流罩的正面压力约为200Pa,其风阻系数为0.559,降低了22.4%,改善效果较明显。Aiming at obtaining the outflow field characteristics of a van loading guide cowl,the speed vector diagram,static pressure diagram and flow diagram of the vehicle were obtaining based on RNG k-εmodel and simplificating vehicle model.The analysis results showed that the positive pressure of carriages was about 500Pa,the wind resistance coefficient was 0.685 when unloaded guide cowl.And the positive pressure of guide cowl was about 500Pa,and the wind resistance coefficient was 0.559 when loaded guide cowl,so the effect of improvement was obvious.

关 键 词：导流罩 外流场 风阻 改进 

分 类 号：U272[机械工程—车辆工程]