Precursor simulations in spreading using a multi-mesh adaptive finite element method
文献类型：期刊论文
| 作者 | Di, Yana1 ; Wang, Xiao-Ping2
|
| 刊名 | JOURNAL OF COMPUTATIONAL PHYSICS
 |
| 出版日期 | 2009-03-20 |
| 卷号 | 228期号:5页码:1380-1390 |
| 关键词 | Multi-mesh Adaptive finite element Wetting and spreading Precursor film Diffuse-interface model |
| ISSN号 | 0021-9991 |
| DOI | 10.1016/j.jcp.2008.10.028 |
| 英文摘要 | Using the phase-field model for immiscible two-phase flows, we have numerically investigated the wetting dynamics. The long-range van der Waals forces towards the solid, which drive the spreading of the wetting phase into the nonwetting phase, have been explicitly taken into account in the governing equations. Our continuum model uses the generalized Navier boundary condition (GNBC) to account for the fluid slipping at the solid surface. The accurate description of the molecular-scale contact-line hydrodynamics makes the numerical simulations cost too much to abide. In this work, we propose an efficient multi-mesh adaptive finite element method which approximates different components of the solution (velocity, pressure and phase variable) on different h-adaptive meshes because of their strongly different local behaviors. That allows us to study the early stage of spreading, wherein the precursor is initiated and developed if the van der Waals forces are strong enough. We find that there is indeed a transition in the spreading behavior across a critical value of the Hamaker constant. In particular, this critical value is noted to be the one that separates the partial wetting from complete wetting. (c) 2008 Elsevier Inc. All rights reserved. |
| 资助项目 | National Science Foundation of China[10701075] ; Hong Kong RGC[CA05/06.SC01] ; Hong Kong RGC[RGC CERG 603107] |
| WOS研究方向 | Computer Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000263370600004 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/8568]  |
| 专题 | 计算数学与科学工程计算研究所 |
| 通讯作者 | Di, Yana |
| 作者单位 | 1.Chinese Acad Sci, Inst Computat Mathe & Sci Eng Comp, Acad Math & Syst Sci, Beijing, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Math, Kowloon, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Di, Yana,Wang, Xiao-Ping. Precursor simulations in spreading using a multi-mesh adaptive finite element method[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2009,228(5):1380-1390. |
| APA | Di, Yana,&Wang, Xiao-Ping.(2009).Precursor simulations in spreading using a multi-mesh adaptive finite element method.JOURNAL OF COMPUTATIONAL PHYSICS,228(5),1380-1390. |
| MLA | Di, Yana,et al."Precursor simulations in spreading using a multi-mesh adaptive finite element method".JOURNAL OF COMPUTATIONAL PHYSICS 228.5(2009):1380-1390. |
入库方式： OAI收割
来源：数学与系统科学研究院
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