Stability of liquid films on a porous vertical cylinder
文献类型：期刊论文
| 作者 | Ding ZJ(丁子敬) ; Liu QS(刘秋生)
|
| 刊名 | Physical Review E
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:4页码:46307 |
| 通讯作者邮箱 | liu@imech.ac.cn |
| 关键词 | Inclined Planes Annular Film Viscous Beads Fluid-Flow Fiber Instability Dynamics Breakup |
| ISSN号 | 1539-3755 |
| 产权排序 | [Ding, Zijing; Liu, Qiusheng] Chinese Acad Sci, Key Lab Micrograv, Natl Micrograv Lab, Inst Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Ding, ZJ (reprint author), Chinese Acad Sci, Key Lab Micrograv, Natl Micrograv Lab, Inst Mech, Beijing 100190, Peoples R China |
| 中文摘要 | The stability of liquid films flowing down a vertical porous cylinder is investigated in this paper. Fluids in the porous medium are assumed to be governed by Darcy's law. The Beaver-Joseph conditions on the liquid-porous surface are applied, and the influence of the porous medium reduces as a slip condition on the cylinder, which leads to the one-sided model. A Benney-type equation governing the interfacial shape is derived to study the nonlinear behavior of liquid films. Linear stability analysis shows that the film flow system on a porous vertical cylinder is more unstable than that on a solid impermeable vertical cylinder and that increasing the permeability of the porous medium enhances the destabilizing effect. Nonlinear studies examine our linear stability analysis. We find that, for Reynolds number Re = 0, as the permeability parameter increases, the rupture time of film decreases; for Re > 0, Rayleigh-Plateau instability is suppressed, and disturbances evolve to saturated traveling waves. By increasing the permeability parameter, the amplitude of traveling wave increases, and the wave speed increases too. Aside from that, the wave speed increases with increasing Re. |
| 学科主题 | Physics |
| 分类号 | 一类 |
| 类目[WOS] | Physics, Fluids & Plasmas ; Physics, Mathematical |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | INCLINED PLANES ; ANNULAR FILM ; VISCOUS BEADS ; FLUID-FLOW ; FIBER ; INSTABILITY ; DYNAMICS ; BREAKUP |
| 收录类别 | SCI ; EI |
| 资助信息 | This work was supported by the National Nature Science Foundation of China (Grant Nos. 50890182 and 11072249), the Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. CXJJ-10-M55), and the Knowledge Innovation Project of Institute of Mechanics, CAS. |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevE.84.046307 |
| 语种 | 英语 |
| WOS记录号 | WOS:000296518100003 |
| 公开日期 | 2012-04-01 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/45068]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 推荐引用方式 GB/T 7714 | Ding ZJ,Liu QS. Stability of liquid films on a porous vertical cylinder[J]. Physical Review E,2011,84(4):46307. |
| APA | 丁子敬,&刘秋生.(2011).Stability of liquid films on a porous vertical cylinder.Physical Review E,84(4),46307. |
| MLA | 丁子敬,et al."Stability of liquid films on a porous vertical cylinder".Physical Review E 84.4(2011):46307. |
入库方式： OAI收割
来源：力学研究所
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