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Journal of Porous Media
Импакт фактор: 1.49 5-летний Импакт фактор: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Печать: 1091-028X
ISSN Онлайн: 1934-0508

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

Journal of Porous Media

DOI: 10.1615/JPorMedia.v14.i6.10
pages 467-480

NATURAL CONVECTION IN A TRAPEZOIDAL ENCLOSURE FILLED WITH A NON-DARCIAN POROUS MEDIUM

Bader Alshriaan Al-Azmi
Mechanical Engineering Department, Kuwait University, Al-Safat 13060, Kuwait

Краткое описание

Natural convection in a trapezoidal enclosure filled with a porous medium is analyzed numerically in this investigation. Three different configurations are tested to determine which configuration exhibits optimum heat transfer characteristics. The vertical walls are subjected to a temperature gradient while the horizontal walls are kept insulated. The transport equations are solved using the finite-element formulation based on the Galerkin method of weighted residuals. The validity of the numerical code used is ascertained by comparing the results with previously published results. The importance of non-Darcian effects on convection in a trapezoidal enclosure is analyzed in this work. Different flow models for porous media, such as Brinkman-extended Darcy, Forchheimer-extended Darcy, and the generalized flow models, are considered. Results are presented in terms of streamlines, isotherms, and average heat transfer. The implications of Rayleigh number, inclination angle, porosity, Darcy number, and the ratio of solid thermal conductivity to the fluid thermal conductivity on the flow structure and heat transfer characteristics are investigated in detail.


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