Prediction of the aerodynamic loads on a railway train in a cross-wind at large yaw angles using an integrated two- and three-dimensional source/vortex panel method

摘要

A three-dimensional source/vortex panel method has been developed to predict the aerodynamic loads on an idealized railway train model in a cross-wind at large yaw angles up to 90°. In this model, the surface of the train and the wake on the leeside are modelled by a number of source and vortex panels, respectively. The algorithm involves the combination of a two- and a three-dimensional procedure in which the two-dimensional calculation simplifies dramatically the computation required for the three-dimensional calculation. The results compare well with experiment.