Proper orthogonal decomposition of oscillatory Marangoni flow in half-zone liquid bridges of low-Pr fluids
文献类型：期刊论文
| 作者 | Li K(李凯) ; Imaishi N; Jing CJ; Yoda S
|
| 刊名 | Journal of Crystal Growth
 |
| 出版日期 | 2007 |
| 卷号 | 307期号:1页码:155-170 |
| 通讯作者邮箱 | imaishi@cm.kyushu-u.ac.jp |
| 关键词 | Computer Simulation Fluid Flows Half-Zone Liquid Bridge Marangoni Flow Oscillatory Flow Microgravity Condition Low-Prandtl Number Fluid 3-Dimensional Numerical-Simulation Thermal-Convection Dynamical Models Instabilities |
| ISSN号 | 0022-0248 |
| 通讯作者 | Imaishi, N (reprint author), Kyushu Univ, Inst Mat Chem & Engn, 6-1 Kasugakoen, Kasuga, Fukuoka 8168580, Japan. |
| 中文摘要 | Proper orthogonal decomposition (POD) using method of snapshots was performed on three different types of oscillatory Marangoni flows in half-zone liquid bridges of low-Pr fluid (Pr = 0.01). For each oscillation type, a series of characteristic modes (eigenfunctions) have been extracted from the velocity and temperature disturbances, and the POD provided spatial structures of the eigenfunctions, their oscillation frequencies, amplitudes, and phase shifts between them. The present analyses revealed the common features of the characteristic modes for different oscillation modes: four major velocity eigenfunctions captured more than 99% of the velocity fluctuation energy form two pairs, one of which is the most energetic. Different from the velocity disturbance, one of the major temperature eigenfunctions makes the dominant contribution to the temperature fluctuation energy. On the other hand, within the most energetic velocity eigenfuction pair, the two eigenfunctions have similar spatial structures and were tightly coupled to oscillate with the same frequency, and it was determined that the spatial structures and phase shifts of the eigenfunctions produced the different oscillatory disturbances. The interaction of other major modes only enriches the secondary spatio-temporal structures of the oscillatory disturbances. Moreover, the present analyses imply that the oscillatory disturbance, which is hydrodynamic in nature, primarily originates from the interior of the liquid bridge. (C) 2007 Elsevier B.V. All rights reserved. |
| 类目[WOS] | Crystallography ; Materials Science, Multidisciplinary ; Physics, Applied |
| 研究领域[WOS] | Crystallography ; Materials Science ; Physics |
| 关键词[WOS] | 3-DIMENSIONAL NUMERICAL-SIMULATION ; THERMAL-CONVECTION ; DYNAMICAL MODELS ; INSTABILITIES |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249801600026 |
| 公开日期 | 2009-08-03 ; 2010-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/33905]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Li K,Imaishi N,Jing CJ,et al. Proper orthogonal decomposition of oscillatory Marangoni flow in half-zone liquid bridges of low-Pr fluids[J]. Journal of Crystal Growth,2007,307(1):155-170. |
| APA | 李凯,Imaishi N,Jing CJ,&Yoda S.(2007).Proper orthogonal decomposition of oscillatory Marangoni flow in half-zone liquid bridges of low-Pr fluids.Journal of Crystal Growth,307(1),155-170. |
| MLA | 李凯,et al."Proper orthogonal decomposition of oscillatory Marangoni flow in half-zone liquid bridges of low-Pr fluids".Journal of Crystal Growth 307.1(2007):155-170. |
入库方式： OAI收割
来源：力学研究所
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