Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Journal of Porous Media
Fator do impacto: 1.49 FI de cinco anos: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v8.i5.100
pages 541-549

Mixed Convection Heat and Mass Transfer with Thermal Radiation in a Non-Darcy Porous Medium

M. K. Partha
Department of Mathematics, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
G. P. Raja Sekhar
Department of Mathematics, Indian Institute of Technology Kharagpur, Kharagpur, 721302

RESUMO

Similarity analysis is presented for simultaneous thermal radiation and mixed convection heat and mass transfer in thermal and solutal boundary layers over a semi-infinite vertical flat plate embedded in a fluid-saturated porous medium. The fluid is considered to be a gray, absorbing-emitting radiation but nonscattering and obeys Rosseland approximation for thermal radiation heat flux. It is observed that the radiation parameter R and temperature ratio CT enhance the heat transfer coefficient in the aiding flow, and their effect is more profound in the Darcy medium rather than in the non-Darcy medium. Even though the effect of radiation is to enhance the heat transfer rate in both aiding and opposing flows, it is more significant in the aiding flow. Unlike in the aiding-flow case, both in opposing-flow and in opposing-buoyancy cases, the effect of radiation is more pronounced in the non-Darcy medium. The effect of R and CT is to marginally increase the mass transfer coefficient. Even though radiation parameter does not have a direct impact on the mass transfer coefficient, it is worth mentioning that the mass transfer coefficient increases as a function of the Lewis number, more in the presence of radiation than in its absence.


Articles with similar content:

Radiation Effects on Mixed Convection over a Nonisothermal Cylinder and Sphere in a Porous Media
Journal of Porous Media, Vol.9, 2006, issue 3
Hamzeh M. Duwairi
Radiative Free Convective Non-Newtonian Fluid Flow past a Wedge Embedded in a Porous Medium
International Journal of Fluid Mechanics Research, Vol.31, 2004, issue 2
Harmindar S. Takhar, Ali J. Chamkha, O. Anwar Bég
NON-SIMILAR SOLUTION OF STEADY MHD MIXED CONVECTION FLOW OVER A ROTATING SPHERE
Computational Thermal Sciences: An International Journal, Vol.8, 2016, issue 6
Ali F. Al-Mudhaf, P. Saikrishnan, J. Rajakumar, Ali J. Chamkha
ANALYTICAL STUDY OF FORCED CONVECTION IN A CHANNEL PARTIALLY FILLED WITH POROUS MATERIAL WITH EFFECT OF MAGNETIC FIELD: CONSTANT WALL HEAT FLUX
Special Topics & Reviews in Porous Media: An International Journal, Vol.9, 2018, issue 3
J. Sharath Kumar Reddy, D. Bhargavi
Mixed-Convection Flow Adjacent to a Horizontal Surface in a Porous Medium with Variable Permeability and Surface Heat Flux
Journal of Porous Media, Vol.8, 2005, issue 2
Gh. M. Omer, I. A. Hassanien