3306 高速車両に作用する流体力評価手法の検討(OS1-3 高速化技術,OS1 交通・物流システムの高速化,利便性,快適性の向上,オーガナイズド・セッション)

概要

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One of the aerodynamic issues affecting high-speed trains is the flow-induced vibration of the tail car when cruising through a tunnel, which results in reduced passenger comfort. The objective of this study is to develop a method to evaluate the fluid force acting on high-speed trains. We conducted wind tunnel tests of a simplified train model using a flat plate to simulate the effect of the tunnel wall. Pressure transducers were used to measure unsteady pressure fluctuations on the tunnel wall, and Pressure Sensitive Paint (PSP) was applied to measure time-averaged surface pressure distribution on the train model. We also conducted Large Eddy Simulation (LES) for the same model and test conditions. The results indicated that by applying LES, we were also to reconstruct the spectrum of pressure fluctuation on the tunnel wall that we observed in the wind tunnel experiment.
2008-12-09