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Multiphysic Two-Phase Flow Lattice Boltzmann: Droplets with Realistic Representation of the Interface

Published online by Cambridge University Press:  20 August 2015

Pablo M. Dupuy,
María Fernandino,
Hugo A. Jakobsen and
Hallvard F. Svendsen
Pablo M. Dupuy*
Affiliation:
Department of Chemical Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, NorwayCSIRO - Mathematics, Informatics and Statistics, Melbourne, Australia. (Current affiliation)
María Fernandino*
Affiliation:
Department of Energy and Process Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
Hugo A. Jakobsen*
Affiliation:
Department of Chemical Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
Hallvard F. Svendsen*
Affiliation:
Department of Chemical Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
*
Email:pablo.dupuy@nt.ntnu.no, pablo.dupuy@csiro.au
Corresponding author.Email:maria.fernandino@nt.ntnu.no
Email:hugo.jakobsen@chemeng.ntnu.no
Email:hallvard.svendsen@chemeng.ntnu.no
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Abstract

Free energy lattice Boltzmann methods are well suited for the simulation of two phase flow problems. The model for the interface is based on well understood physical grounds. In most cases a numerical interface is used instead of the physical one because of lattice resolution limitations. In this paper we present a framework where we can both follow the droplet behavior in a coarse scale and solve the interface in a fine scale simultaneously. We apply the method for the simulation of a droplet using an interface to diameter size ratio of 1 to 280. In a second simulation, a small droplet coalesces with a 42 times larger droplet producing on it only a small capillary wave that propagates and dissipates.

Keywords

82.70.-y02.70.Hm02.60.NmTwo-phase flowdiffuse interface modelmulti-scalereal interface

Information

Type
Research Article
Information
Communications in Computational Physics , Volume 9 , Issue 5 , May 2011, pp. 1414 - 1430
Copyright
Copyright © Global Science Press Limited 2011

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