平行二円板流入角部のはく離泡と下流の放射流に及ぼす入口形状の形状の影響

概要

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The annular separation bubble around the inlet corner and the radial flow between two parallel disks were investigated by means of flow visualzation and numerical simulations to gain an understanding of the features of axisymmetric separation and reattachment in the inlet region. For the case with sharp corner, the radius of the separation point depends only clearance ratio, independent of Reynolds number in the turbulent flow regime where the reattachment point fluctuates randomly. For the cases with rounded corner, the radius of reattachment point and the height of the bubble decrease with increseing corner roundness.
大同工業大学の論文