摘要
某款越野车在进行动态测试时,发现在中高速行驶过程中风噪声相对较大,油耗偏高。通过仿真软件对其流场和噪声进行分析,发现整车前部有较大的气流分流现象,车辆尾部气流收敛不强,不能很平顺地剥离,风阻较大。基于汽车气动性能提升的车辆设计原则,在车辆局部进行修正及优化,可有效降低风阻系数0.028,达到目标风阻要求。
During the dynamic test of an off-road vehicle,it is found that the noise of the vehicle is relatively large and the fuel consumption is high.Through the analysis of its flow field and noise by simulation software,it is found that there is a large airflow distribution in the front of the vehicle,the airflow convergence at the rear of the vehicle is not strong,can’t be smoothly stripped,wind resistance is large.Based on the vehicle design principle of improving the aerodynamic performance of the vehicle,local modification and optimization of the vehicle can effectively reduce the wind resistance coefficient by 0.028 and reach the target wind resistance requirement.
作者
屈鹏
刘雪莹
QU Peng;LIU Xueying
出处
《汽车工程师》
2020年第3期56-57,共2页
Automotive Engineer
关键词
汽车
虚拟仿真技术
空气动力学
风噪声性能
Vehicle
Virtual simulation technology
Aerodynamics
Wind noise performance
