縦渦による壁面噴流の制御 : 平均流特性および縦渦の挙動(<小特集>乱流せん断流の制御)

概要

論文の詳細を見る
The effect of a streamwise vortex on the development of a wall jet has been investigated experimentally. A streamwise vortex created with a half delta wing mounted on the wall, which has the same height as inner-layer thickness, is introduced into a self-preserving wall jet. The mean flow field and its deformation due to secondary flow induced by the vortex are reported in detail. Evolution of the streamwise vortex itself, decay of vorticity, and path and growth of vortex radius are measured and compared with corresponding results obtained in turbulent boundary layers. An increased streamwise momentum flux due to the vortex shows that control with a vortex generator, which is a well-known technique for boundary layers, is successful for control of the wall jet.
一般社団法人日本機械学会の論文
1997-01-25