溝付回転円筒周りの PIV 解析

抄録

We have previously confirmed that a Goerlter vortex occurred in the circumferential direction in the boundary layer of the rotary cylinder put in a uniform flow. The aim of this study is to confirm the separation position on the rotating cylinder changed by some grooves along the circumferential and the span direction in a rotary cylinder. We visualized the separation position the Goerlter vortex that was a whirlpool long in PIV measurement experiment measurement experiment. It was confirmed to be changed by the depth of the ditch which is dug in a cylinder, or with/without grooves. Furthermore, we confirmed it about the outbreak of the Goerlter vortex and relations of the detachment.