汽车侧窗风致声压分析

详细信息    查看官网全文

• 英文论文题名：Analysis of the Wind-induced Acoustic Pressure Fluctuation on the Vehicle Side Windows
• 论文作者：柳阳 ; 王毅刚 ; 李启良 ; 周泽 ; 白玉儒
• 英文论文作者：Liu Yang ; Wang Yigang ; Li Qiliang ; Zhou Ze ; Bai Yuru ; Changan Auto R&D Center ; Changan Automobile Co.Ltd. ; College of Automotive Studies ; Tongji University ; FFT&MSC Company
• 年：2016
• 作者机构：长安汽车公司汽车工程研究总院;同济大学汽车学院;FFT&MSC公司;
• 论文关键词：汽车风噪 ; 侧窗 ; 湍流脉动压力 ; 声脉动压力 ; Lighthill体声源
• 英文论文关键词：wind noise of vehicles ; side window ; turbulence pressure fluctuation ; acoustic pressure fluctuation ; Lighthill volume sound source
• 会议召开时间：2016-10-26
• 会议录名称：2016中国汽车工程学会年会论文集
• 英文会议录名称：Proceedings of 2016 SAE-China Congress
• 语种：中文
• 分类号：U463.835
• 学会代码：QCGC
• 会议名称：2016中国汽车工程学会年会暨展览会
• 会议地点：中国上海
• 主办单位：中国汽车工程学会
• 学会名称：中国汽车工程学会
• 页数：4
• 文件大小：1026k
• 原文格式：O
• 会议级别：全国

摘要

本文通过数值模拟方法对汽车外流场产生的声波辐射到侧窗产生的声压力脉动进行了仿真和分析。首先通过不可压缩CFD(计算流体动力学)计算得到外流场的脉动压力、速度;然后通过Lighthill(莱特希尔)体声源计算以及声传播计算得到侧窗上的声压力脉动。计算结果显示了体声源及侧窗声压力脉动的分布特征,为外造型的风噪性能优化提供了依据。
The acoustic pressure fluctuation on the side window,which is induced by the turbulent flow around a vehicle,is simulated and analyzed in present work.First,the fluctuated velocity and pressure in the flow field is obtained by incompressible CFD simulation.Then the acoustic pressure fluctuation is simulated by Lighthill volume sound source computation and acoustic propagation computation.The results show the character of Lighthill volume sound source and acoustic pressure fluctuation,which gives us a base for improving the wind noise performance of the styling of the vehicle.

引文

[1]Matthias Riegel.Wind Noise-A Dominant Source for InCabin Noise in Comparison to Other Noise Sources of a Vehicle[C].CFA/DAGA'04,2004.
    [2]肖朕毅.高速车辆气动噪声研究[D].长沙:湖南大学,2007.
    [3]David J.Lepley,Anna Graf,Robert Powell,et al.A Computational Approach to Evaluate the Vehicle Interior Noise from Greenhouse Wind Noise Sources[C].SAE2010-01-0285.
    [4]Denis Blanchet,Anton Golota,Nicolas Zerbib,et al.Wind Noise Source Characterization and How It Can Be Used To Predict Vehicle Interior Noise[C].SAE 2014-01-2052.
    [5]Denis Blanchet,Anton Golota.Combining Modeling Methods to Accurately Predict Wind Noise Contribution[C].SAE 2015-01-2326.
    [6]Diego Copiello.Separating the acoustic from the hydrodynamic pressure on a realistic side mirror configuration[C].European Conference-Thermal Systems and Aeodynamic Solutions for Ground Vehicles,2015.
    [7]Marie Cabrol.Passenger Car Side-Mirror Exterior Noise Simulation and Validation[C].The 22nd International Congress on Sound and Vibration,2015.
    [8]S.W.Rienstra,A.Hirschberg.An Introduction to Acostics[D],Eindhoven University of Technology,2010;33.