A lattice boltzmann simulation of three-dimensional displacement flow of two immiscible liquids in a square duct

Redapangu, P R and Sahu, Kirti Chandra and Vanka, S P (2013) A lattice boltzmann simulation of three-dimensional displacement flow of two immiscible liquids in a square duct. Journal of Fluids Engineering, 135 (12). pp. 1-8. ISSN 0098-2202

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Abstract

A three-dimensional, multiphase lattice Boltzmann approach is used to study a pressuredriven displacement flow of two immiscible liquids of different densities and viscosities in a square duct. A three-dimensional, 15-velocity (D3Q15) lattice model is used. The effects of channel inclination, viscosity, and density contrasts are investigated. The contours of the density and the average viscosity profiles in different planes are plotted and compared with those obtained in a two-dimensional channel. We demonstrate that the flow dynamics in a three-dimensional channel is quite different as compared to that of a two-dimensional channel. We found that the flow is relatively more coherent in a three-dimensional channel than that in a two-dimensional channel. A new screw-type instability is seen in the three-dimensional channel that cannot be observed in the two-dimensional channel.

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IITH Creators:
IITH CreatorsORCiD
Sahu, Kirti Chandrahttp://orcid.org/0000-0002-7357-1141
Item Type: Article
Uncontrolled Keywords: Different densities; Immiscible liquids; Lattice boltzmann approaches; Lattice Boltzmann simulations; Lattice modeling; Three-dimensional channels; Three-dimensional displacements; Two dimensional channels
Subjects: Chemical Engineering > Biochemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Team Library
Date Deposited: 14 Nov 2014 10:33
Last Modified: 14 May 2018 10:53
URI: http://raiith.iith.ac.in/id/eprint/763
Publisher URL: https://doi.org/10.1115/1.4024998
OA policy: http://www.sherpa.ac.uk/romeo/issn/0098-2202/
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