高速列车隧道会车压力波的数值分析方法  

Numerical method on transient pressure with high speed trains crossing through a tunnel

作　　者：梅元贵[1] 余南阳[2] 赵海恒[2] 刘应清[2] 

机构地区：[1]兰州铁道学院机电与动力工程学院,甘肃兰州730070 [2]西南交通大学机械工程学院,四川成都610031

出　　处：《铁道学报》2002年第2期21-25,共5页Journal of the China Railway Society

基　　金：国家"八五"重点科技攻关项目 (85- 4 0 2 - 0 2 - 0 2 );铁道部科技发展计划项目 (98Z0 4 )

摘　　要：根据一维可压缩不等熵非定常流体流动理论和广义黎曼变量特征线法 ,提出了研究高速列车隧道会车压力波较完整的物理模型 ,并将广义黎曼变量特征线法应用于列车几何尺寸不同条件下的等速会车和混行会车的压力波计算。与国外代表性的现场实测和计算结果比较 ,本文结果有较高的计算精度 ,流动模型和计算方法正确可行。A one dimensional unsteady compressible non isentropic flow prediction method for calculating transient pressure waves generated by high speed trains crossing through a single bore tunnel is proposed. This numerical procedure is based on the method of characteristics expressed with generalized Riemann Variables. Most important factors affecting airflow in tunnel are considered. This procedure can be applied to calculate pressure waves for the equal speed and nonequal speed train crossings with different train length. The calculated results show that the numerical prediction method and model are reasonable.

关 键 词：高速列车 会车压力波 隧道 特征线法 

分 类 号：U453.8[建筑科学—桥梁与隧道工程]