队列行驶车辆的空气动力特性

Aerodynamic characteristics of vehicle platoon

为了研究队列行驶时,车辆前后间距对队列行驶车辆气动特性的影响以及队列中车辆数目对气动阻力系数的影响,采用数值模拟方法分别对智能交通系统中队列行驶车辆11种不同情况下车辆的气动特性分别进行了研究。结果表明:队列行驶车辆随车间距离的缩短,阻力值降低。在固定间距下,随着队列中车辆数目的增加,平均阻力系数可降低20%—30%,阻力最低的车大致处于车队的中心位置。

In order to reveal the effects of the longitudinal spacing between the vehicles and vehicle number in platoon on the aerodynamic drag coefficient of vehicle platoon, the numerical simulation method was used to study the aerodynamic characteristics of 11 cases of a serial vehicle platoon in the intelligent transport system. Results indicated that the drag of platoon decreases with the decreasing of the vehicle spacing at fixed vehicle number. At fixed longitudinal spacing, with the increasing of vehicle number in platoon the average drag coefficient may decrease by 20%-30% and the vehicle with the lowest drag is about at the center of the platoon.