並列タイトル等Boundary-Layer Control on a Freely Falling Sphere
タイトル（掲載誌）航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-15
一般注記The effect of surface roughness on a sphere at free fall has been investigated. The test sphere is of 100 mm in diameter, and is equipped with built-in processors such as a pressure sensor, a tension sensor, an amplifier, a memory, a power supply and a CPU. The surface roughness was obtained by a ring of phi 1 mm wire attached to the surface at angles phi r = 25 degrees and 55 degrees , respectively, measured from the stagnation point. In the case of phi r = 25 degrees , the pressure distributions were same as a smooth sphere at Re less than equal to 105. In the case of phi r = 55 degrees , on the other hand, the effects of trip ring were striking, indicating the laminar-turbulent transition of the boundary layer at Re = 5 by 104.
資料番号: NALSP0015010
レポート番号: NAL SP-15
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43484&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