中文摘要：

本文基于粘性流体的Navier-Stokes方程和κ-ε双方程湍流模型，运用流体动力学数值仿真软件FLUENT对不同的真空管道阻塞比条件下，高速列车在不同运行速度下车体所受到的空气阻力进行数值仿真，得出真空管道内阻塞比对列车空气阻力的影响规律。研究结果表明：在真空管道内，阻塞比越大，列车所受到的空气阻力也越大；阻塞比较小时，阻塞比的变化对列车所受到的阻力的影响较小，但是当阻塞比较大时，列车所受阻力急剧上升；真空管道运输具有快速、高效的优越性。

英文摘要：

The influence of the blockage rate on the acrodynamic drag of a high-speed train in evacuated tube trans-portation （ETT） was numerically simulated, with a dedicated software package for numerical simulation of fluid dynamics called FLUENT. The turbulent model satisfies the 2D, viscous, stable and incompressible Navier-Stockes equation and the κ-ε two-equation. Six different blockage rates and four specific speeds of the train were calculated in the simulation with finite volume approximation. The simulated results show that the blockage rate significantly affects the aerodynamic drag of the train in an evacuated tube. For example, the larger the blockage rate, the higher the aerodynamic drag. A relative small blockage rate affects the aerodynamic drag only a little, whereas a large blockage rate sharply increases the aerodynamic drag.