| 微型客车后视镜气动噪声仿真分析与控制 |
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| 引用本文： | 汪怡平,谷正气,杨雪,李伟平,袁志群.微型客车后视镜气动噪声仿真分析与控制[J].航空动力学报,2009,24(7):1577-1583. |
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| 作者姓名： | 汪怡平 谷正气 杨雪 李伟平 袁志群 |
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| 作者单位： | 1.湖南大学 汽车车身先进设计制造国家重点实验室, 长沙 410082 |
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| 基金项目： | 国家高技术研究发展863计划项目(2007AA04Z122);;教育部长江学者与创新团队发展计划项目(531105050037);;湖南省科技计划重大项目(06FJ2001) |
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| 摘 要： | 采用大涡模拟(LES)对某微型客车的瞬态外流场进行仿真分析,应用Lighthill-Curle声类比理论,采用FW-H声学模型,预测其车外气动噪声特性.对后视镜局部造型进行优化改进.最后进行了实车道路实验,测试了60～120 km/h整车噪声,测试结果表明,通过改进后视镜的造型整车噪声有了明显降低,且最大降幅为1.2 dB.
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| 关 键 词： | 计算流体力学(CFD) 大涡模拟(LES) 气动噪声 声类比 |
| 收稿时间： | 2008/7/12 0:00:00 |
| 修稿时间： | 2009/3/19 0:00:00 |
Aerodynamic noise analysis and control for mini-van car side view mirror |
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| WANG Yi-ping,GU Zheng-qi,YANG Xue,LI Wei-ping and YUAN Zhi-qun.Aerodynamic noise analysis and control for mini-van car side view mirror[J].Journal of Aerospace Power,2009,24(7):1577-1583. |
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| Authors: | WANG Yi-ping GU Zheng-qi YANG Xue LI Wei-ping and YUAN Zhi-qun |
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| Institution: | 1.State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China2.Optoelectronic Technology Laboratory, Wuhan Ordnance Noncommissioned Officers School, Wuhan 430075, China |
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| Abstract: | The transient exterior flow field of a mini-van was computed by large eddy simulation(LES),and then the noise characteristic was predicted using FW-H acoustic model based on Lighthil-Curle acoustic analogy theory.The local shape of the mirror was modified to reduce the aerodynamic noise.Finally a real vehicle road test was implemented,with the test velocities from 60 km/h to 120 km/h.The result shows that the vehicle noise has been noticeably reduced,or even down to 1.2 dB,by modifying the mirror shape. |
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| Keywords: | computational fluid dynamics (CFD) large eddy simulation (LES) aerodynamic noise acoustic analogy |
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