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Simulation of double diffusive MHD (magnetohydrodynamic) natural convection and entropy generation in an open cavity filled with power-law fluids in the presence of Soret and Dufour effects (Part I: Study of fluid flow, heat and mass transfer)

Citation

Kefayati, GHR, Simulation of double diffusive MHD (magnetohydrodynamic) natural convection and entropy generation in an open cavity filled with power-law fluids in the presence of Soret and Dufour effects (Part I: Study of fluid flow, heat and mass transfer), Energy, 107 pp. 889-916. ISSN 0360-5442 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 Elsevier Ltd.

Official URL: https://www.sciencedirect.com/science/article/pii/...

DOI: doi:10.1016/j.energy.2016.05.049

Abstract

In this paper, double diffusive natural convection of non-Newtonian power-law fluids in an open cavity in the presence of a horizontal magnetic field, studying Soret and Dufour parameters has been analyzed by FDLBM (Finite Difference Lattice Boltzmann method). This study has been performed for the certain pertinent parameters of Rayleigh number (Ra = 104 and 105), Hartmann number (Ha = 0, 15, and 30), power-law index (n = 0.6, 1, and 1.4), Lewis number (Le = 2.5 and 5), Dufour parameter (Df = 0, 1, and 5), Soret parameter (Sr = 0, 1, and 5) and the buoyancy ratio (N = −1and 1). Results indicate that the augmentation of the Hartmann number provokes heat and mass transfer to drop for different power-law indexes. As the Soret and Dufour numbers equal zero, the heat and mass transfer decrease with the increment of the power-law index in different Rayleigh numbers for various Hartmann numbers. The heat transfer increases with the rise of the Dufour parameter and the mass transfer enhances as the Soret parameter increases for different power-law indexes and Rayleigh numbers. The augmentation of Soret and Dufour parameters alters the behavior of heat and mass transfer against the change of the power-law index.

Item Details

Item Type:Refereed Article
Keywords:Open cavity, Power-law fluid, Natural convection, Magnetic field, FDLBM (Finite Difference Lattice Boltzmann method)
Research Division:Engineering
Research Group:Interdisciplinary Engineering
Research Field:Heat and Mass Transfer Operations
Objective Division:Energy
Objective Group:Energy Transformation
Objective Field:Energy Transformation not elsewhere classified
UTAS Author:Kefayati, GHR (Dr Gholamreza Kefayati)
ID Code:127667
Year Published:2016
Web of Science® Times Cited:19
Deposited By:Engineering
Deposited On:2018-08-08
Last Modified:2018-09-10
Downloads:0

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