A Study of Fluid Interfaces and Moving Contact Lines Using the Lattice Boltzmann Method

AbstractWe study the static and dynamical behavior of the contact line between two fluids and a solid plate by means of the Lattice Boltzmann method (LBM). The different fluid phases and their contact with the plate are simulated by means of standard Shan-Chen models. We investigate different regimes and compare the multicomponent vs. the multiphase LBM models near the contact line. A static interface profile is attained with the multiphase model just by balancing the hydrostatic pressure (due to gravity) with a pressure jump at the bottom. In order to study the same problem with the multicomp... Mehr ...

Verfasser: Srivastava,S.,Perlekar,P.,Biferale,L.,Sbragaglia,M.,Boonkkamp,"J. H. M. ten Thije",Toschi,F.
Dokumenttyp: Artikel
Erscheinungsdatum: 2013
Schlagwörter: EC / European Commission / ERC / FP7 / Netherlands / SP2-Ideas / Physics and Astronomy (miscellaneous)
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-29181317
Datenquelle: BASE; Originalkatalog
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Link(s) : https://www.openaccessrepository.it/record/142441

AbstractWe study the static and dynamical behavior of the contact line between two fluids and a solid plate by means of the Lattice Boltzmann method (LBM). The different fluid phases and their contact with the plate are simulated by means of standard Shan-Chen models. We investigate different regimes and compare the multicomponent vs. the multiphase LBM models near the contact line. A static interface profile is attained with the multiphase model just by balancing the hydrostatic pressure (due to gravity) with a pressure jump at the bottom. In order to study the same problem with the multicomponent case we propose and validate an idea of a body force acting only on one of the two fluid components. In order to reproduce results matching an infinite bath, boundary conditions at the bath side play a key role. We quantitatively compare open and wall boundary conditions and study their influence on the shape of the meniscus against static and lubrication theory solution.