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Wetting boundaries for a ternary high-density-ratio lattice Boltzmann method

Bala, Neeru; Pepona, Marianna; Karlin, Ilya; Kusumaatmaja, Halim; Semprebon, Ciro

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Authors

Neeru Bala

Marianna Pepona

Ilya Karlin

Ciro Semprebon



Abstract

We extend a recently proposed ternary free-energy lattice Boltzmann model with high density contrast [Phys. Rev. Lett. 120, 234501 (2018)] by incorporating wetting boundaries at solid walls. The approaches are based on forcing and geometric schemes, with implementations optimized for ternary (and, more generally, higher-order multicomponent) models. Advantages and disadvantages of each method are addressed by performing both static and dynamic tests, including the capillary filling dynamics of a liquid displacing the gas phase and the self-propelled motion of a train of drops. Furthermore, we measure dynamic angles and show that the slip length critically depends on the equilibrium value of the contact angles and whether it belongs to liquid-liquid or liquid-gas interfaces. These results validate the model capabilities of simulating complex ternary fluid dynamic problems near solid boundaries, for example, drop impact solid substrates covered by a lubricant layer.

Citation

Bala, N., Pepona, M., Karlin, I., Kusumaatmaja, H., & Semprebon, C. (2019). Wetting boundaries for a ternary high-density-ratio lattice Boltzmann method. Physical Review E, 100(1), Article 013308. https://doi.org/10.1103/physreve.100.013308

Journal Article Type Article
Online Publication Date Jul 24, 2019
Publication Date Jul 31, 2019
Deposit Date Jul 25, 2019
Publicly Available Date Jul 25, 2019
Journal Physical review . E, Statistical, nonlinear, and soft matter physics
Print ISSN 2470-0045
Electronic ISSN 2470-0053
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 100
Issue 1
Article Number 013308
DOI https://doi.org/10.1103/physreve.100.013308

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Copyright Statement
Reprinted with permission from the American Physical Society: Bala, Neeru Pepona, Marianna , Karlin, Ilya Kusumaatmaja, Halim & Semprebon, Ciro (2019). Wetting boundaries for a ternary high-density-ratio lattice Boltzmann method. Physical Review E 100(1): 013308 © 2019 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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