2707 LDVによる車両床下流速分布の測定(空力・騒音,SS1:高度化,高速化,第18回交通・物流部門大会(TRANSLOG2009))

概要

論文の詳細を見る
The air flow between the underside of a vehicle and a track is one of main causes of ballast flying phenomena, snow accretion, aerodynamic drag, aerodynamic noise and so on. We measured the flow in on-track tests to obtain reference data to be used for wind tunnel tests and CFD that are effective tools to study the flow. In the on-track tests, we used Laser Doppler Velocimetery (LDV) that is no-contact sensor by which we can measure the flow velocity in the area outside the rolling stock gauge. As a result of the measurement, it was confirmed that the velocity under the head vehicle is higher than that under the intermediate vehicle and that the velocity under the intermediate vehicles is higher on the ballasted track than on the slab track.
一般社団法人日本機械学会の論文
2009-12-02