並列タイトル等Interaction between Two Horseshoe Vortices in a Turbulent Boundary Layer
タイトル（掲載誌）独立行政法人航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-59
一般注記Interaction phenomena between adjacent horseshoe vortices were experimentally investigated in a fully developed turbulent boundary layer. A pair of horseshoe vortices was artificially induced by injecting small swirling jets. To observe vortex structure, coherent velocity and vorticity components were obtained by conditional hot-wire measurement. A stronger sweep was induced by inside legs of two horseshoe vortices than by single horseshoe vortex in the symmetrical vertical plane. When two horseshoe vortices were induced simultaneously, they merged with each other at X=700mm and each inside leg of horseshoe vortices was separated. The separated legs might change to streaks. The merged horseshoe vortices grew to a single larger horseshoe structure in the downstream region. On the other hand, two horseshoe vortices induced with time delay of 20msec didn't connected between them. Separation of their inside legs was not observed apparently. Peak values of normal vorticity of trailing horseshoe vortex was smaller than that of leading horseshoe vortex at X=700mm, Y/δ=1.0.
資料番号: NALSP0059018
レポート番号: NAL SP-59
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43590&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ