鉄道車両用電動機のストレーナ内部における旋回流れの挙動(解析・予測・制御流体機器・船舶・航空機,一般講演)

概要

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The structure of a swirling flow occurring in the strainer for railway traction motor was investigated with the aid of a particle image velocimetry (PIV). The two types of strainer, a spiral-type one and a slit-type one, were used in the present experiment. For both of the strainers, the presence of a swirling flow was confirmed from the velocity vector maps measured in the cross-stream plane. In the spiral-type strainer, however, the instantaneous streamlines were distorted by the effect of spiral surface. On the other hand, in the slit-type strainer, the instantaneous velocity field indicated moderate axisymmetric swirling flow structure. Furthermore, it was found that these flow features affected the distribution of centripetal acceleration which was related to the dust collector performance.
2009-09-02