3304 縮尺の異なる風洞模型を用いた集電装置まわりの流速分布の比較(SS1-1 高速化と空力現象,SS1 高度化,高速化,J-Rail 2006)

概要

論文の詳細を見る
On an investigation of a flow field around a high-speed vehicle, engineers and researchers currently apply wind tunnel test with models of a reduced scale. Where a wind tunnel test with models of a reduced scale carried out, differences of Reynolds numbers between a real vehicle and scaled models should be considered. However, there are still many unknown factors of the Reynolds number dependency of a flow field around a vehicle, especially current collection equipment. In this research, authors applied two different scaled models for a large-size wind tunnel and for a small-size wind tunnel, and compared flow fields around models. As a result, where a pantograph is equipped on a smooth roof, flow field is independent on Reynolds number. Therefore, significant wind tunnel test is possible applying small size scaled model. On the contrary, where a pantograph is equipped with a pantograph shield, flow field is not independent on Reynolds number, but a tendency of flow field can be clarified applying large size scaled model.
一般社団法人日本機械学会の論文
2006-12-13