摘要
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％。
An investigation on turbulent flows over high speed trains in ground proximity is carried out.The difference in coefficients of drag and side forces with and without ground effect is presented.The numerical results are compared with those from wind tunnel experiments.It is shown that the accuracy of the coefficients of drag and side forces with ground effect is much greater than those without ground effect.
出处
《西南交通大学学报》
EI
CSCD
北大核心
1997年第2期150-153,共4页
Journal of Southwest Jiaotong University
