Multiphase lattice Boltzmann simulations of buoyancy-induced flow of two immiscible fluids with different viscosities

Redapangu, P R and Vanka, S P and Sahu, K C (2012) Multiphase lattice Boltzmann simulations of buoyancy-induced flow of two immiscible fluids with different viscosities. European Journal of Mechanics, B/Fluids, 34. pp. 105-114. ISSN 0997-7546

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Abstract

We study the effects of viscosity differential on buoyancy-induced interpenetration of two immiscible fluids in a tilted channel using a two-phase lattice Boltzmann method implemented on a graphics processing unit. The effects of viscosity differential on the flow structures, average density profiles and front velocities are studied. Relatively stable fingers are observed for high viscosity ratios. The intensity of the interfacial instabilities and the transverse interpenetration of the fluids are seen to increase with decreasing viscosity differential of the fluids

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IITH Creators:
IITH CreatorsORCiD
Sahu, K Chttp://orcid.org/0000-0002-7357-1141
Item Type: Article
Uncontrolled Keywords: Fluid mechanics; Interface; Laminar flow; Lattice Boltzmann simulation; Mixing; Multiphase flow
Subjects: Chemical Engineering > Biochemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Team Library
Date Deposited: 13 Nov 2014 05:06
Last Modified: 10 Jul 2017 12:03
URI: http://raiith.iith.ac.in/id/eprint/753
Publisher URL: https://doi.org/10.1016/j.euromechflu.2012.01.006
OA policy: http://www.sherpa.ac.uk/romeo/issn/0997-7546/
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