Three dimensional modeling of liquid droplet spreading on solid surface: An enriched finite element/level-set approach

JOURNAL OF COMPUTATIONAL PHYSICS

卷:442

Article

Hashemi, Mohammad R.^1,2  Ryzhakov, Pavel B.^1,2  Rossi, Riccardo^1,2 

[1] Ctr Int Metodes Numer Engn CIMNE, Barcelona 08034, Spain

[2] Univ Politecn Catalunya UPC, Barcelona 08034, Spain

关键词: Two-phase flow;    Surface tension;    Wetting;    Microfluidics;    Droplets;    Contact-line;   

DOI  :  10.1016/j.jcp.2021.110480

来源: Elsevier

【 摘 要 】

A physically consistent approach is introduced to simulate dynamics of droplets in contact with solid substrates. The numerical method is developed by introducing the molecular-kinetic model within the framework of the level-set/enriched finite element method and including the theoretically resolved sub-elemental hydrodynamics. The level-set method is customized to comply fully with the model acquired for the moving contact-line. The consistency of the proposed method is verified by comparing the simulation results with the theoretical predictions. In order to further validate the method, the spreading of a droplet is numerically modeled and compared rigorously with the experimental data reported in the literature. The proposed method is also employed to capture the evolution of a droplet trapped in a conical pore. All test-cases are simulated on three-dimensional computational domains. (C) 2021 The Author(s). Published by Elsevier Inc.

【 授权许可】

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