| 车辆天窗气动噪声的数值分析与实验研究 |
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| 引用本文： | 胡亚涛,薛永飞,陈军,李启明,吴克启.车辆天窗气动噪声的数值分析与实验研究[J].工程热物理学报,2011(4):589-592. |
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| 作者姓名： | 胡亚涛 薛永飞 陈军 李启明 吴克启 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室;普度大学机械工程学院;河南工程学院; |
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| 基金项目： | 国家自然科学基金项目(No.50976044); 国家留学基金委的资助 |
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| 摘 要： | 本文从汽车天窗气动噪声的机理入手,利用与实车几何尺寸为1:5的简化模型进行了空腔绕流的数值计算,分析了其流场结构及气动噪声产生的原因.在低速静音风洞中进行了不同流速下的流场和声场实验研究,研究了天窗不同位置的速度剪切层变化,以及不同流速下的声压级变化,发现了除了特征频率下的风振噪声,还存在较大频率范围的气动噪声,其随着...
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| 关 键 词： | 天窗 气动噪声 风振噪声 实验研究 |
Numerical Simulation and Experimental Study of Vehicle Aerodynamic Noise from Open Sunroof |
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| HU Ya-Tao XUE Yong-Fei CHEN Jun LI Qi-Ming WU Ke-Qi.Numerical Simulation and Experimental Study of Vehicle Aerodynamic Noise from Open Sunroof[J].Journal of Engineering Thermophysics,2011(4):589-592. |
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| Authors: | HU Ya-Tao XUE Yong-Fei CHEN Jun LI Qi-Ming WU Ke-Qi |
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| Institution: | HU Ya-Tao~(1,2) XUE Yong-Fei~(1,3) CHEN Jun~2 LI Qi-Ming~2 WU Ke-Qi~1 (1.State Key Laboratory of Coal Combustion,HuaZhong University of Science & Technology,Wuhan 430074,China,2.School of Mechanical Engineering,University of Purdue,West Lafayette,IN 47906,US,3.Henan Institute of Engineering,ZhengZhou 451191,China) |
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| Abstract: | Based on the mechanism of aerodynamic noise from vehicle sunroof is analyzed,We apply numerical simulations to analyze flow structures and the reason caused sound around a sunroof cavity in a 1:5 scaled car model.In a low-speed quiet wind tunnel,the flow and acoustic fields are measured at different inlet velocities.The velocity profiles of mixing layer at different position of the cavity opening are studied.At different speeds,buffeting noise with characteristic low frequency is identified. In addition,the... |
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| Keywords: | sunroof aerodynamic noise buffeting noise experimental research |
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