纯电动汽车底盘风噪声源特性研究  

The Characteristic of Wind Noise Source on Underbody of an Electric Vehicle

作　　者：杨蒙 孙作奎 胡松源 张永仁 YANG Meng;SUN Zuo-kui;HU Song-yuan;ZHANG Yong-ren(Lantu Automobile Technology Co Ltd,Wuhan 430o56,China;Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 43oo70,China)

机构地区：[1]岚图汽车科技有限公司,武汉430056 [2]武汉理工大学现代汽车零部件技术湖北省重点实验室,武汉430070

出　　处：《武汉理工大学学报》2024年第3期142-147,共6页Journal of Wuhan University of Technology

基　　金：湖北省支持企业科技创新发展专项(2021BA015)。

摘　　要：随着上车身引起的风噪声逐渐得到控制,电动汽车车底高速气流对车内噪声的影响逐渐凸显。为了解决纯电动汽车底盘风噪声凸显的问题,采用大涡模拟(LES)的方法,通过分析底盘流场结构和表面脉动压力级,对某电动汽车底盘区域的高速气流噪声源进行了研究。研究表明,底盘的车轮区域成为电动汽车底盘风噪声的主要来源,在汽车底部加装挡风板和侧裙,可以有效改善降低电动汽车的底盘风噪源强度性能。As the wind noise caused by the upper body of vehicles is gradually being controlled,the influence of highspeed airflow under the vehicle on the interior noise of electric cars is becoming increasingly prominent.To address the heightened chassis wind noise in electric vehicles,the Large Eddy Simulation(LES)method was employed.By analyzing the flow field structure and surface fluctuating pressure levels in the chassis area,the research investigates the sources of high-speed airflow noise.The results show that the wheel area in the underbody becomes the main source of wind noise in electric cars.Adding wind deflectors and side skirts to the underside of the vehicle is an effective way to reduce wind noise intensity from the underbody of electric cars.

关 键 词：电动汽车 风噪声 车底高速气流 大涡模拟 

分 类 号：U461.1[机械工程—车辆工程]