高速列车绕流的数值模拟

THE NUMERICAL SIMULATION OF THE FLOW FIELD AROUND HIGH SPEED TRAINS

给出了用低速N－S方程求解高速列车绕流的数值计算方法，采用显隐式结合的方法来加快收敛速度，基于该方法编制了计算软件系统Train3D，用该软件系统对高速列车外形的外流场进行了数值模拟，获得了该外形的空气动力特性和流场结构。

This paper presents the numerical method of the flow field around high speed trains using Navier-stokes equations. The mixed difference scheme of the implicit and explicit al-gorithm is adapted to improve the convergence characteristic. The program system Train3D that is based on this method is developed. The aerodynamics and flow structures for high speed trains are obtained using this program system.