An efficient computational model for macroscale simulations of moving contact lines

JOURNAL OF COMPUTATIONAL PHYSICS

卷:242

Article

Sui, Y.^1,2  Spelt, Peter D. M.^3,4 

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England

[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England

[3] Univ Lyon 1, Dept Mecan, F-69622 Villeurbanne, France

[4] CNRS, LMFA, Ecully, France

关键词: Moving contact line;    Macroscale simulation;    Level-set method;    Viscous regime;    Inertial regime;    Asymptotic theories;   

DOI  :  10.1016/j.jcp.2013.02.005

来源: Elsevier

【 摘 要 】

We propose an efficient level-set approach for numerical simulation of moving contact lines. The main purpose is to formulate and test a model wherein the macroscale flow is resolved while the effects of the microscopic region near a contact line are represented using asymptotic theories. The model covers viscous as well as inertial regimes. Test simulations include axisymmetric displacement flow in a tube and droplet spreading on a flat surface. The results show that the present approach leads to excellent convergence properties even with very coarse grids; furthermore, the results agree well with asymptotic analysis, with those obtained with a method for direct numerical simulations (wherein an adaptive grid is used) and also with experiments. (C) 2013 Elsevier Inc. All rights reserved.

【 授权许可】

Free