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两种改善汽车风洞轴向静压系数的方法
引用本文:李启良,郑志强,贾青,杨志刚.两种改善汽车风洞轴向静压系数的方法[J].同济大学学报(自然科学版),2010,38(3):422-426.
作者姓名:李启良  郑志强  贾青  杨志刚
作者单位:1. 同济大学,上海地面交通工具风洞中心,上海,201804
2. 上海汽车集团股份有限公司技术中心,上海,201804
基金项目:长江学者与创新团队发展计划资助项目,高等学校博士学科点专项科研基金资助项目 
摘    要:改善轴向静压系数对提高汽车风洞实验段流场品质具有重要意义.实验与数值模拟均发现,增加收集口角度或增加收集口喉部间隙都能有效改善汽车风洞实验段轴向静压系数,而且收集口角度越大或喉部间隙越大,轴向静压系数改善效果越明显.另外,实验还比较了单独增加收集口角度、收集口喉部间隙以及收集口角度和喉部间隙组合后对轴向静压系数的影响,旨在为全尺寸汽车风洞改善轴向静压系数提供依据.

关 键 词:汽车风洞  轴向静压系数  收集口角度  收集口喉部间隙
收稿时间:2008/11/26 0:00:00
修稿时间:2009/12/30 0:00:00

Two Methods to Improve the Axial Static Pressure Coefficient of Automotive Wind Tunnel
LI Qiliang,ZHENG Zhiqiang,JIA Qing and YANG Zhigang.Two Methods to Improve the Axial Static Pressure Coefficient of Automotive Wind Tunnel[J].Journal of Tongji University(Natural Science),2010,38(3):422-426.
Authors:LI Qiliang  ZHENG Zhiqiang  JIA Qing and YANG Zhigang
Institution:LI Qiliang1,ZHENG Zhiqiang2,JIA Qing1,YANG Zhigang1 (1.Shanghai Automotive Wind Tunnel Center,Tongji University,Shanghai 201804,China,2.SAIC Motor Technical Center,China)
Abstract:The flow quality of automotive wind tunnel test section can be improved by decreasing the axial static pressure coefficient.Both test results and numerical results show that the axial static pressure coefficient can be improved by increasing the collector angle or increasing gap of collector throat,and their effects become more and more obvious with larger collector angle and larger gap of collector throat.In addition,the influence of the axial static pressure by only increasing the collector angle or only ...
Keywords:automotive wind tunnel  axial static pressure coefficient  collector angle  gap of collector throat
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