摘要
文章以一种常见轿跑车为分析对象,采用CFD计算方法对高速行驶过程中的汽车进行三维数值模拟,对车体加设尾翼装置前后的外流场进行了分析研究。考察了尾翼装置对汽车空气动力特性的影响,为实际生产提供一种高效设计手段。通过分析发现加装汽车尾翼装置可以增加车体表面压力加大车轮对地面的附着力,同时改变汽车尾部流场,降低了尾部因气流回旋造成的升力。虽然安装尾翼装置后汽车能耗会在一定程度上增加,但是可以大大提高汽车的行驶稳定性。
Based on a common coupe as analysis object, using CFD calculation method in the process of high speed car for simulation of the flow field before and after the body including the rear wing, examines the rear wing device influence on automobile aerodynamic characteristics, and provides a highly efficient design method for practical production. Analyzing the installation of car rear wing device can increase pressure wheel on the ground adhesion to the surface of car body, change the flow field,and reduce the rear wing lift force caused by the airflow swirl. Installing the rear wing device after automobile energy consumption can increase a certain extent, but the driving stability of vehicle is improved greatly.
出处
《汽车实用技术》
2016年第1期158-160,共3页
Automobile Applied Technology
关键词
汽车
空气动力学
尾翼
计算流体力学
Car Aerodynamics
rear wing
Computational fluid dynamics
