压力平衡口对开口式汽车模型风洞驻室流场影响的数值仿真  

Numerical simulation on effects of breather on flow field of open-jet automotive model wind tunnel

作　　者：贾青[1] 杨志刚[1] 

机构地区：[1]同济大学上海地面交通工具风洞中心,上海201804

出　　处：《计算机辅助工程》2007年第3期92-95,共4页Computer Aided Engineering

摘　　要：为尽可能真实地建立汽车测试环境,对开口式汽车模型风洞驻室试验段流场品质进行数值仿真,研究在开设压力平衡口前后的流场品质,并对不同面积和形式的压力平衡口工况进行数值仿真,得到不同试验段内流场品质的计算结果.通过比较分析得出结论:有压力平衡口时,特别是压力平衡口的面积为140m×140m时,汽车模型风洞驻室试验段最有利于汽车性能测试.To set up an automotive test environment as accurate as real environment, numerical simulation is carried for the characteristics of flow field in test section of open-jet automotive wind tunnel. The characteristics of flow field are studied with or without breather. The operating conditions with breathers of different area and form are simulated and the results of characteristics of flow field in different test section are obtained. It is concluded by comparison and analysis that the test section of open-jet automotive wind tunnel has advantage on testing automotive performance with breather, especially with 140 m × 140 m breather.

关 键 词：汽车模型风洞 试验段 压力平衡口 数值仿真 计算流体力学 FLUENT 

分 类 号：U467.13[机械工程—车辆工程] TP391.9[交通运输工程—载运工具运用工程]