摘要
利用国内首个整车气动-声学风洞对某车辆在两种锚定方式下的气动力进行测量。结果表明,传统的浮动模式在高风速时车尾上翘,且上翘高度随着风速增加而增大。导致气动阻力系数比固定模式大,最大差值0.006。风速高于100km/h时气动升力系数比固定模式小,最大差值0.007。因此,整车气动力测量时应考虑锚定方式的影响,根据试验目的和条件合理选择车辆锚定方式,以保证测试精度。
Aerodynamic force measurement of a vehicle with two different ways of anchoring is conducted in the first full scale aerodynamic / acoustic wind tunnel in China. The results indicate that with traditional floating mode, the rear end of vehicle rises at high wind speed, leading to a higher drag coefficient than that with fixed mode, and the maximum difference reaches 0. 006, while the lift coefficient with floating mode is smaller than that with fixed mode when wind speed is higher than 100 km/h with a maximum difference up to 0. 007 . So the effects of vehicle anchoring mode should be taken into consideration in aerodynamic measurement, and it is recommended to properly select the way of vehicle anchoring according to the objective and condition of test to ensure the accuracy of measurement.
出处
《汽车工程》
EI
CSCD
北大核心
2014年第11期1369-1371,1377,共4页
Automotive Engineering
基金
国家重点基础研究发展计划(973计划)(2011CB711203)资助
关键词
风洞试验
固定模式
浮动模式
气动力
wind tunnel test
fixed mode
floating mode
aerodynamic force
