An efficient computational model for macroscale simulations of moving contact lines

作者：Sui Y^*; Spelt Peter D M

来源：Journal of Computational Physics, 2013, 242: 37-52.

DOI：10.1016/j.jcp.2013.02.005

• Moving contact line
• Macroscale simulation
• Level-set method
• Viscous regime
• Inertial regime
• Asymptotic theories

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.

• 出版日期2013-6-1