| 汽车声学模型风洞消声拐角数值计算与试验 |
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| 引用本文： | 王毅刚,杨志刚,倪晓强,李启良.汽车声学模型风洞消声拐角数值计算与试验[J].同济大学学报(自然科学版),2011,39(2):271-275. |
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| 作者姓名： | 王毅刚 杨志刚 倪晓强 李启良 |
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| 作者单位： | 同济大学,汽车学院,上海,201804 |
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| 摘 要： | 运用流体力学数值计算(CFD)以及实验手段对汽车气动-声学模型风洞消声拐角导流片形状、片数、头尾结构对气动和消声性能的影响进行研究.研究结果表明,综合考虑压力损失、流场流动的均匀度和气动噪声对消声量的影响,可以寻找最佳导流片数;半椭圆形头部和尖形尾部导流片有较低的压力损失和气动噪声,避免采用半圆形尾部形状;对模型风洞而...
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| 关 键 词： | 气动声学模型风洞 拐角消声器 压力损失 消声量 |
| 收稿时间： | 2010/4/19 0:00:00 |
| 修稿时间： | 2010/12/25 0:00:00 |
Numerical Computation and Experiment on Corner Silencer in Automotive Aero acoustic Model Wind Tunnel |
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| WANG Yigang,YANG Zhigang,NI Xiaoqiang and LI Qiliang.Numerical Computation and Experiment on Corner Silencer in Automotive Aero acoustic Model Wind Tunnel[J].Journal of Tongji University(Natural Science),2011,39(2):271-275. |
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| Authors: | WANG Yigang YANG Zhigang NI Xiaoqiang and LI Qiliang |
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| Institution: | College of Automotive Studies, Tongji University, Shanghai 201804,China;College of Automotive Studies, Tongji University, Shanghai 201804,China;College of Automotive Studies, Tongji University, Shanghai 201804,China;College of Automotive Studies, Tongji University, Shanghai 201804,China |
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| Abstract: | A study was made of the effect of the shape,the number,head and end shape of the turning vanes on the aerodynamic and noise elimination performances of the corner silencer in automotive aero-acoustic model wind tunnel by means of the computational flow dynamics(CFD) and the acoustic experiment.The results show that the optimization number of the turning vanes can be found by considering synthetically the pressure loss,the flow uniformity and the aerodynamic noise influence on noise elimination.Half ellipse head and tine end of the turning vane cause the lower pressure loss and aerodynamic noise than the hemicycle end.The corner silencer for the aero-acoustic model wind tunnel is better to eliminate middle and high frequency noise. |
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| Keywords: | aero-acoustic model wind tunnel corner silencer pressure loss noise elimination |
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