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Lattice Boltzmann simulation of double-diffusive natural convection of viscoplastic fluids in a porous cavity

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Kefayati, G ORCID: 0000-0001-9757-8260 2019 , 'Lattice Boltzmann simulation of double-diffusive natural convection of viscoplastic fluids in a porous cavity' , Physics of Fluids, vol. 31, no. 1 , pp. 1-21 , doi: 10.1063/1.5074089.

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Abstract

In this paper, a two-dimensional double diffusive natural convection in a porous cavity filled with viscoplastic fluids is simulated. The dimensional and non-dimensional macroscopic equations are presented, employing the Papanastasiou model for viscoplastic fluids and the Darcy-Brinkman-Forchheimer model for porous media. An innovative approach based on a modification of the lattice Boltzmann method is explained and validated with previous studies. The effects of the pertinent dimensionless parameters are studied in different ranges. The extensive results of streamlines, isotherms, and isoconcentration contours, yielded/unyielded regions, and local and average Nusselt and Sherwood numbers are presented and discussed.

Item Type: Article
Authors/Creators:Kefayati, G
Keywords: convection, heat and mass transfer, Bingham fluid, LBM
Journal or Publication Title: Physics of Fluids
Publisher: Amer Inst Physics
ISSN: 1070-6631
DOI / ID Number: 10.1063/1.5074089
Copyright Information:

Copyright 2019 The Author. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Physics of Fluids, volume 31, issue 1, 2019 and may be found at http://dx.doi.org/10.1063/1.5074089

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