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利用数值模拟方法，研究了考虑地面效应和不考虑地面效应的高速列车湍流绕流之间差别，并利用风洞试验进行了验证。应用改进的曲线网格系统和计算程序Ｔｒａｉｎ，对高速列车绕流流场进行了较为精确的数值模拟。从计算结果分析看出，考虑地面效应的阻力系数比未考虑地面效应的阻力系数增加１５％，使计算精度从７５％增加到８５％。
The difference between turbulent flow around high-speed train considering ground effect and ground effect is studied by using numerical simulation method and verified by wind tunnel test. The improved curvilinear grid system and calculation program Train are used to simulate the flow around the high-speed train. From the analysis of the calculated results, the resistance coefficient considering the ground effect increases by 15% compared with the resistance coefficient without considering the ground effect, which increases the calculation precision from 75% to 85%.