J0501-3-4 Optimization of aerodynamic shape using deformable wind tunnel model for wind tunnel test

Abstract

Speed up is one of the most important issues of Shinkansen. However, aerodynamic noise of Shinkansen has been serious problem. One of the main noise sources is a pantograph installed on the roof to collect current. Sound from a panhead predominates in pantograph noise. Up to now, the shape optimization for the panhead using CFD analysis has been studied. But, the performance of a present computer is not enough. Therefore, the authors proposed shape-optimization method based on wind tunnel testing with "Deformable Wind runnel Model", which is composed of frames and a film. By some experiment, this method can be useful for shape optimization.