摘要
针对轻量化后汽车高速行驶时过大的升力影响汽车的动力性、行驶安全性和操作稳定性等问题,对随动尾翼在汽车高速行驶时控制汽车产生升力的能力方面进行了研究,对多种翼型的随动尾翼控制汽车升力的能力进行了归纳,提出了一种前后对称翼型,利用Fluent对前后对称翼型随动尾翼与汽车进行了联合空气动力仿真,分析了不同尾翼迎角下前后对称翼型随动尾翼调控汽车升力大小和方向的能力。研究结果表明:在不同的汽车重量时,前后对称随动尾翼可以通过调整尾翼迎角控制汽车高速行驶时产生升力的大小和方向,不仅能增加汽车重量来增加高速行驶时汽车的动力性、行驶安全性和操作稳定性,也能减小汽车的重量来达到减少燃油消耗量、增加燃油效率、节能减排的目的。
Aiming at the problems that the car after being lightweight is influented by too much lift that the car had when at high speed with power performance,driving security and operational stability,the ability of the follow-up tail to control the lift of the car when at high speed was studied. The capability of follow-up tail with a variety of airfoil to control the lift was summarized,a kind of front and rear symmetrical airfoil was proposed. The capability of follow-up tail with front and rear symmetrical airfoil to control the magnitude and direction of the lift in different angles of attack was analyzed,by using Fluent to do the air dynamic simulation of the follow-up tail with front and rear symmetrical airfoil combined the car. The results indicate that when the car have different weight,the follow-up tail with front and rear symmetrical airfoil can control the lift that the car have when at high speed by adjusting the angle of attack,not only can increase the weight of the car to increase power performance,driving security and operational stability,but also can reduce weight of the car to reduce fuel consumption,increase fuel efficiency,achieve the purpose of energy saving and emission reduction at high speed.
出处
《机电工程》
CAS
2016年第8期915-921,共7页
Journal of Mechanical & Electrical Engineering
关键词
汽车升力
迎角
尾翼
安全性
操作稳定性
lift of car
angle of attack
tail
driving security
operational stability
