| 具有地面效应的高速列车湍流绕流数值模拟研究 |
| |
| 引用本文： | 张小钢,刘应清.具有地面效应的高速列车湍流绕流数值模拟研究[J].西南交通大学学报,1997,32(2):150-153. |
| |
| 作者姓名： | 张小钢 刘应清 |
| |
| 作者单位： | [1]西南交通大学应用力学研究所 [2]西南交通大学工程科学研究院 |
| |
| 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％。
|
| 关 键 词： | 地面效应 湍流 绕流 数值模拟 高速列车 |
Staggered Calculation of Turbulent Flows overHigh Speed Trains in Ground Proximity |
| |
| Zhang,Xiaogang.Staggered Calculation of Turbulent Flows overHigh Speed Trains in Ground Proximity[J].Journal of Southwest Jiaotong University,1997,32(2):150-153. |
| |
| Authors: | Zhang Xiaogang |
| |
| Abstract: | 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. |
| |
| Keywords: | ground proximity turbulent flow numerical calculation |
| 本文献已被 CNKI 维普 等数据库收录！ |
