252 CFDによるパンタグラフの最適化(G05-4 流体騒音,G05 流体工学)  [in Japanese] 252 Pantograph Optimization by CFD  [in Japanese]

As the maximum speed of Shinkansen trains increases, aerodynamic characteristics of pantograph have become an important subject of discussions. To maintain steady current-collecting performance, it is crucial to reduce the fluctuation of the aerodynamic lift force that works on pantographs. We have been investigating to optimize the panhead configuration by combining computational fluid dynamics and numerical optimization techniques. The panhead wears out and changes its shape with time. With consideration given to this situation, we tried to optimize the panhead configuration in this study.