平行二円板間のはく離泡に及ぼす円板の回転効果 : 二円板が回転する場合 : 流体工学,流体機械

概要

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To understand the features of an axisymmetrically rotating separation flow between two parallel disks, we have investigated the rotation effect of counter- and co-rotating disks on an inlet separation bubble which appears around the inlet corner and a downstream flow, using the numerical calculation method. We have also examned the effect of a radial diffuser (stationaly disks) on these flows. The reverse-flow region appears downstream In the mid gap when the disks are counter rotating. Furthemore, the dead-water region appears when the disks are co-rotating. And the radius of reattachment point of the inlet separation bubble varies with an increase of the rotating Reynolds numbers, as the reverse-flow or the dead-water region increases upstream from the outlet. In both cases, a pair of ring vortices rotating counter to each other occurs in the region between the rotating disks, when the radial diffuser is placed around the rotating disks.
一般社団法人日本機械学会の論文
2001-08-25