| 発表年月日 | 1998/12/22 |
|---|---|
| 発表テーマ | 自由表面のある円筒内の渦崩壊について |
| 会議名 | 第12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 |
| 国際共著 | 国際共著 |
| 国名 | 日本 |
| 開催期間 | 1998/12/21 ～ 1998/12/23 |
| 発表者・共同発表者 | 岩津 玲磨，児山 秀晴, 玄 在民 |
| 概要 | A numerical study was conducted on the swirling flows within a cylindrical container with rotating bottom and upper free surface. The bottom wall executes coaxial rotation at a constant angular velocity. The side wall is stationary. The deformation of the free surface is assumed to be small and neglected in the present computation. The container aspect ratio is fixed at h = 2.0 and the Reynolds number is varied in the range of 500 =< Re =< 3000. The streamlines obtained by the numerical solutions are compared with the existing experimental visualization and the outcome exhibits gross similarity. The power spectra of the unsteady solutions are also compared with the past experimental report and some discrepancies are detected in the transition behavior. Possible cause of the different behavior is discussed. |