An Allen–Cahn-based lattice Boltzmann model for two-phase flows with surfactants

Chengcheng Fan (), Suchen Wu () and Chengbin Zhang
Additional contact information
Chengcheng Fan: School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, P. R. China
Suchen Wu: School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, P. R. China
Chengbin Zhang: School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, P. R. China

International Journal of Modern Physics C (IJMPC), 2025, vol. 36, issue 07, 1-15

Abstract: Accurately modeling two-phase flows involving the surfactant is of great significance for understanding the interface evolution dynamics due to the variation of surface tension. In this study, we proposed an Allen–Cahn-based lattice Boltzmann model for two-phase flows with soluble surfactants, in which a new force scheme from the view of continuous surface tension force scheme and the consistent wetting boundary condition are derived. Several numerical tests are conducted, and the results are compared with the model based on the previous potential form (PF) interfacial force scheme. The results indicate that our proposed model can model two-phase flows involving the soluble surfactants, even for high-density ratio situations. The distribution across the interface is accurately predicted. Our model also shows superior performance on two-phase dynamics involving surfactants, i.e. smaller spurious currents and larger range of contact angle. This model can be a favorable alternative for high-density-ratio two-phase flows involving soluble surfactants.

Keywords: Lattice Boltzmann; two-phase; surfactant; force scheme; wetting (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S012918312450253X
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:ijmpcx:v:36:y:2025:i:07:n:s012918312450253x

Ordering information: This journal article can be ordered from

DOI: 10.1142/S012918312450253X

Access Statistics for this article

International Journal of Modern Physics C (IJMPC) is currently edited by H. J. Herrmann

More articles in International Journal of Modern Physics C (IJMPC) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().