| 発表年月日 | 1999/12/21 |
|---|---|
| 発表テーマ | 自由表面を有する回転円筒内の軸対称な渦崩壊 |
| 会議名 | 第13回数値流体シンポジウム |
| 主催者 | 日本流体力学会 |
| 開催地名 | 東京 |
| 学会区分 | 全国学会 |
| 発表形式 | 口頭（一般） |
| 単独共同区分 | 共同 |
| 国名 | 日本 |
| 開催期間 | 1999/12/21 ～ 1999/12/23 |
| 発表者・共同発表者 | 小川 恭伸，岩津 玲磨 |
| 概要 | Extended studies have been made on the vortex breakdown inside a cylindrical container the past numerical simulations. Majority of studies conducted on the vortex breakdown is treated the case of flows inside the closed container with bottom and top disks. The occurrence of vortex breakdown in a cylindrical container is considered to be influenced by the swirling velocity component and the upstream vorticity distribution. Therefore, in the present study, by changing the top disk non-slip boundary condition to the free-slip boundary condition, the free surface influence on vortex breakdown is investigated in detail. Novel flow behavior is noted for container with small aspect ratio. |