中文摘要：

基于三维非定常黏性不可压缩Navier—Stokes方程和标准湍流模型，利用Fluent流体计算软件，建立高速列车隧道内等速交会数值计算模型．模拟同样外形的两辆CRH380HL型高速列车以4种车速在隧道内交会时气动作用力的变化过程，得出列车车体内外压力变化规律；运用车体内部瞬变压力计算公式计算车厢内压力，根据车厢内压力大小对乘客乘车舒适性做出评价．

英文摘要：

Based on the three-dimensional unsteady viscous incompressible Navier-Stokes equations and the standard turbulence model, using the Fluent computational fluid dynamics software, the situation that the high- speed train intersected in tunnel by the same speed was simulated. Two CRH380HL of same shape were ar- ranged to intersect in the tunnel at four kinds of speed to simulate the changing process of aerodynamic forces, and the data of internal and external pressures of train body was collected. Using the formula to calculate the interior pressure of train body, this paper presented the passenger comfort evaluation of different train speeds.