The influence of different aerodynamic setups on enhancing a sports car's braking
The influence of different aerodynamic setups on enhancing a sports car's braking
复制标题
DOI：
10.1016/j.ijmecsci.2019.105140
复制
发表时间：
2019-12
影响因子：
7.3
通讯作者：
K. Kurec;M. Remer;J. Piechna
中科院分区：
文献类型：
--
作者：
K. Kurec;M. Remer;J. Piechna
本文介绍了几种不同的空气动力学设置，可以用来提高跑车的制动性能的分析。利用风洞试验数据和CFD计算结果，研究了一款Targa敞篷车车身的气动力系数和流动特性。研究了小迎角和大迎角时，车身尾翼作为空气制动器的影响。研究了车身的平衡，并显示了放置在不同位置的空气制动器如何影响汽车前轴和后轴上的负载。还研究了一种增加下载力的替代方法，包括使用易于隐藏在车身轮廓内的小型可移动元件。由于汽车的阻力系数增加了0.58，升力系数降低了1.1，制动距离可以减少31%，这取决于车辆的速度和驾驶条件，这证明了在制动模式中利用主动空气动力学有助于提高驾驶安全性。
This paper presents an analysis of several different aerodynamic setups that can be utilized to improve the braking performance of a sports car. The coefficients of aerodynamic forces and the flow properties of a targa top car body were investigated with the use of wind tunnel data as well as the results of CFD calculations. The influence of a car body's rear wing utilized as an air brake was presented at a low angle of attack and at a high angle of attack. The balance of the car body was investigated and it was shown how the load on the front and rear axles of the car can be affected by an air brake placed in different locations. An alternative method for the increase of the download force was also studied which included the use of small movable elements that are easy to hide within the silhouette of the car body. Due to the increase of the car's drag coefficient by 0.58 and the decrease of the lift coefficient by 1.1, the braking distance can be reduced up to 31%, depending on the vehicle's speed and driving conditions, which proves that active aerodynamics utilized in braking mode can contribute to the improvement of driving safety.