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Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

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

Volumes:
Volume 23, 2020 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.v4.i1.60
9 pages

Natural Convection Due to Solar Radiation from a Vertical Plate Embedded in a Porous Medium with Variable Porosity

Ali J. Chamkha
Mechanical Engineering Department, Prince Sultan Endowment for Energy and Environment, Prince Mohammad Bin Fahd University, Al-Khobar 31952, Saudi Arabia; RAK Research and Innovation Center, American University of Ras Al Khaimah, P.O. Box 10021, Ras Al Khaimah, United Arab Emirates
Camille Issa
Department of Civil Engineering, Lebanese American University, Byblos, Lebanon
Khalil Khanafer
Mechanical Engineering Department, Australian College of Kuwait, Safat, 13015

RESUMO

Natural convection boundary-layer due to solar radiation flow of a Newtonian absorbing fluid over a semi-infinite, ideally transparent, vertical flat plate embedded in a porous medium having a variable porosity distribution is considered. Continuum equations governing this boundary-layer flow and heat transfer situation are derived taking into consideration the Boussinesq approximation and the presence of an applied incident radiation flux. To account for the heat loss from the plate surface, a convective-type boundary condition is employed there. The obtained equations and boundary conditions are transformed using a nonsimilarity transformation and solved numerically by an implicit iterative finite-difference scheme. Selected graphical results for the velocity and temperature fields as well as the boundary friction and Nusselt number are presented and discussed.


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