Airflow Simulation around Railroad Cars of Shin-Kan-Sen

Abstract

A new FEM/FDM composite scheme for two-dimensional incompressible flow problems combining the finite element method which is best suited to analyse flow in any arbitrarily shaped flow geometry and the finite difference method which is advantageous in both computing time and computer storage is presented. The combination of both methods enables large-scale viscous flows to be analysed and it is crucial for both the detailed analysis of three-dimensional flows and the solving of flow problems around moving bodies. Numerical results for cars of a railroad car entering a tunnel and cars passing each other correlate well with results obtained by measurements on actual cars and model analysis.