基于压强射流板的汽车天窗风振噪声优化  

Optimization of Wind Buffeting Noise of Automobile Sunroof Based on Pressure Jet Plate

作　　者：高骏 杨易[1] 郑乐典 张勇[1,2] GAO Jun;YANG Yi;ZHENG Ledian;ZHANG Yong(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,China;College of Mechanical Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082 [2]湖南工业大学机械工程学院,湖南株洲412007

出　　处：《湖南工业大学学报》2021年第4期9-15,29,共8页Journal of Hunan University of Technology

基　　金：国家自然科学基金资助项目(51975197);湖南省自然科学基金资助项目(2019JJ60063,2019JJ60064);湖南省教育厅科研基金资助重点项目(18A270,20A157)。

摘　　要：针对汽车天窗开启引发的风振噪声问题,在分析了天窗风振噪声生成机理的基础上,提出采用压强射流板结构对风振噪声进行控制的方法。通过数值仿真模拟,对比分析了汽车原始天窗和添加压强射流板的风振噪声,验证了压强射流板降噪的有效性。并以风振噪声的声压级为优化目标,对压强射流板的射流压强和射流角度进行了优化设计,通过对比筛选出最优的降噪方案。结果表明,压强射流板可以有效降低风振噪声的脉动压力波动幅度和声压级强度,从而提高汽车的乘坐舒适性。In view of the problem of wind buffeting noise brought about by the opening of the automobile sunroof,based on the analysis of its generating mechanism,the wind buffeting noise control method with a pressure jet plate structure has thus been proposed.After a numerical simulation,a comparative analysis has been made of the wind buffeting noise of the original sunroof and the pressure jet plate to verify effectiveness of pressure jet plate.Taking the sound pressure level of wind buffeting noise as the optimization target,an optimization can be achieved of the jet pressure and jet angle,followed by a comparison and final selection of the optimal noise reduction scheme.The results show that the pressure jet plate can effectively reduce the pulsating pressure fluctuation amplitude and sound pressure level of wind buffeting noise,thus improving the riding comfort of the car.

关 键 词：汽车天窗 风振噪声 压强射流板 降噪 

分 类 号：U462[机械工程—车辆工程]