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: 1.752 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 24, 2021 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.v15.i5.10
pages 403-414

FREE CONVECTION ACROSS A BILAYERED AND INCLINED POROUS CAVITY SUBMITTED TO NONSYMMETRICAL HEATING

Yacine Ould-Amer
Laboratoire des Transports Polyphasiques et Milieux Poreux, Departement de Genie Mecanique, USTHB, B.P. 32, El Alia, Bab Ezzouar 16111, Algeria
Rachid Bennacer
L2MGC F-95000, University of Cergy-Pontoise, 95031 Cergy-Pontoise Cedex, Paris, France; ENS-Cachan Dpt GC/LMT/CNRS UMR 8535, 61 Ave. du Président Wilson, 94235 Cachan Cedex, France; Tianjin Key Lab of Refrigeration Technology, Tianjin University of Commerce, 300134

RESUMO

A numerical study is performed to investigate the effect of tilted cavity on free convection in a bilayered porous enclosure. Both the top and bottom walls are insulated whereas the left and right side walls are uniformly heated and linearly cooled, respectively. A general model including inertia effects and the Brinkman term is being used. The nonlinear coupled dimensionless governing equations are resolved using the control volume method. Results are presented and discussed for inclination angle values between 0° and 60° and a modified Rayleigh number between 102 and 103. The first layer is considered as reference with a porosity of 0.4 and the second layer permeability is changing with a ratio between 10−2 and 103. The numerical results include the stream function and temperature contours, the velocity field, and both local and average Nusselt numbers are presented and discussed. For all simulated cases, it is found that two eddies are formed. The main cell turns clockwise whereas the second turns counterclockwise. The numerical results show the existence of an optimal inclination value that leads to a maximum heat transfer.


Articles with similar content:

Natural Convection of Water in a Closed Three-Dimensional Rectangular Cavity Heated from Below Near the Point of Density Inversion
Heat Transfer Research, Vol.31, 2000, issue 6-8
S. P. Rodionov
Lattice Boltzmann Simulation of Natural Convection in an Inclined Heated Cavity Partially Using Cu/Water Nanofluid
International Journal of Fluid Mechanics Research, Vol.39, 2012, issue 4
Davood Ganji (D.D. Ganji), Gh. R. Kefayati, H. Sajjadi, M. Gorji
NUMERICAL STUDY OF PERMEABILITY EFFECT ON CONVECTION IN FRACTURED POROUS MEDIA FILLED WITH HYDROCARBON TERNARY MIXTURE
ICHMT DIGITAL LIBRARY ONLINE, Vol.13, 2008, issue
T. J. Jaber
EFFECTS OF INTERNAL HEAT GENERATION AND PARTIAL HEATING ON TRANSIENT NATURAL CONVECTION IN AN INCLINED POROUS CAVITY USING LTNE MODEL
Journal of Porous Media, Vol.23, 2020, issue 2
Rozaini Roslan, J. H. Al-Smail, Ammar I. Alsabery, Ishak Hashim
NUMERICAL SIMULATION OF MIXED CONVECTION IN A SiO2/WATER NANOFLUID IN A TWO−SIDED LID-DRIVEN SQUARE ENCLOSURE WITH SINUSOIDAL BOUNDARY CONDITIONS ON THE WALL
Heat Transfer Research, Vol.45, 2014, issue 7
Seyed Sadegh Mirtalebi Esforjani, Mohammad Hadi Hajmohammad, Mohammad Akbari, Mohammad Hemmat Esfe