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| 高速列车突入隧道时的三维非定常流的数值模拟 | |
| 引用本文： | 骆建军,高波,王梦恕.高速列车突入隧道时的三维非定常流的数值模拟[J].中国铁道科学,2005,26(1):15-19. |
| 作者姓名： | 骆建军 高波 王梦恕 |
| 作者单位： | 1. 北京交通大学,土建学院,北京,100044;西南交通大学,土木学院,四川,成都,610031 2. 西南交通大学,土木学院,四川,成都,610031 3. 北京交通大学,土建学院,北京,100044 |
| 基金项目： | 国家自然科学基金资助项目(50178060) |
| 摘 要： | 给出高速列车突入隧道形成压力波的三维粘性流场数值模拟过程,控制方程三维粘性、可压缩、不等熵、非定常流的Navier Stokes方程。空间离散采用中心有限体积法格式,时间采用预处理二阶精度多步后差分格式进行离散,对列车与隧道之间的相对运动采用滑动网格技术。真实地描述列车进入隧道所形成压缩波的过程。计算结果与国内外的试验结果相符。计算结果表明:隧道内的压缩波呈现三维特性;同一断面上的压力变化的差异性与列车的运行方式有关。 |
| 关 键 词： | 高速列车 压力波 压力梯度 有限体积法 数值模拟 |
| 文章编号： | 1001-4632(2005)01-0015-05 |
| 修稿时间： | 2004年3月8日 |
Numerical Simulation on an Unsteady Three-Dimension Flow Produced by High-speed Train Passing into a Tunnel |
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| LUO Jian-jun.Numerical Simulation on an Unsteady Three-Dimension Flow Produced by High-speed Train Passing into a Tunnel[J].China Railway Science,2005,26(1):15-19. | |
| Authors: | LUO Jian-jun |
| Institution: | LUO Jian-jun~ |
| Abstract: | A cell-centered finite volume scheme for numerical integration of Navier-Stokes equations has been presented for three-dimensional unsteady viscous compressible non-homentropic flow to model pressure wave induced by high-speed train passing through tunnels. The numerical procedure is based on preconditioned second-order accurate backward difference in time, and the relative motion between train and tunnels treated with sliding mesh technique. It describes the forming process of the compression wave when train enters into a tunnel. The calculation results agree with the experiment results of home and abroad. The results show that the pressure wave is three-dimension, and the difference among the different points at the same cross-section of the tunnel connects with the running style of train. |
| Keywords: | High-speed train Pressure wave Pressure gradient Finite volume method Numerical simulation |
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