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中文摘要：
为了研究队列行驶时不同的车间距对领航车辆气动阻力的影响,采用风洞试验方法,分别测量了队列行驶工况下领航车辆和领航车辆单独行驶时的阻力系数。又运用粒子图像测速技术对以上工况中领航车辆尾部纵对称面内的流场进行了测量与分析。结果表明：随着车间距的缩短,领航车辆阻力值降低,降幅最大达41.66%,并且尾部流场的涡的拖曳距离、扩展直径和强度上都呈现减小的趋势。
英文摘要：
For revealing the effects of vehicle spacing on the aerodynamic drag of leading vehicle in platoon driving,the drag coefficients of leading vehicle in both platoon driving and ordinary driving of the same vehicle alone are measured respectively by wind tunnel test.And the wake flow in the longitudinal symmetry plane of rear end of leading vehicle is also measured and analyzed by using particle image velocimetry technology.The results show that with the reduction in vehicle spacing,the drag coefficient of leading vehicle lowers with the maximum decline rate up to 41.66%,and the trailing distance,expanded diameter and intensity of vortex in wake flow also tend to decrease.
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