Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Porous Media
Импакт фактор: 1.49 5-летний Импакт фактор: 1.159 SJR: 0.43 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.v16.i10.30
pages 903-919

NUMERICAL SOLUTION OF DOUBLE-DIFFUSIVE NATURAL CONVECTION IN A POROUS CAVITY PARTIALLY HEATED FROM BELOW AND PARTIALLY SALTED FROM THE SIDE

Anas A. Altawallbeh
Department of Basic Sciences and Mathematics, Faculty of Science, Philadelphia University 19392, Amman, Jordan
Nawaf H. Saeid
Flow Modeling and Simulation Research Cluster, Universiti Teknologi Brunei, Tungku Link, Gadong, BE 1410, Brunei Darussalam
Ishak Hashim
School of Mathematical Sciences & Solar Energy Research Institute, Faculty of Science & Technology, Universiti Kebangsaan Malaysia 43600 UKM Bangi, Selangor DE, Malaysia

Краткое описание

Double-diffusive natural convection in a square porous enclosure is studied numerically when the bottom and right walls are partially heated and partially salted, respectively. The top wall is maintained at a constant cold temperature and the left wall is fully salted at a lower concentration than the right. The Darcy model is used in the mathematical formulation. The finite volume method is used to solve the governing equations. The governing parameters of the present study are Rayleigh number (Ra), Lewis number (Le), buoyancy ratio (N), heating segment length (lh) heating segment position (xh), concentration segment length (ls), and concentration segment position (ys). The results were discussed in the effect of these parameters on streamlines, isotherms, isoconcentration lines, and the heat- and mass-transfer processes, and presented graphically. Generally, there is a direct relation between buoyancy ratio and heat- and mass-transfer processes. The results show a significant effect of the heating and concentration segment's length and position on the heat- and mass-transfer processes. The minimum value of average Nusselt number occurs with N > 0 for all the positions of the heating segment except the positions xh > 0.1 and 0.9, where the minimum value occurs with N > 1 and − 1, respectively.


Articles with similar content:

NATURAL CONVECTION INDUCED BY VOLUMETRIC HEATING IN AN INCLINED POROUS CAVITY
Computational Thermal Sciences: An International Journal, Vol.9, 2017, issue 1
Mohamed Si-Ameur, Soufyane Benmenzer
NATURAL CONVECTION IN A RECTANGULAR CAVITY FILLED WITH AN ANISOTROPIC POROUS MEDIUM
International Heat Transfer Conference 11, Vol.11, 1998, issue
Patrick Vasseur, G. Degan, H. Beji
NATURAL DOUBLE DIFFUSIVE CONVECTION INDUCED BY OPPOSING BUOYANCY FORCES IN A SHALLOW HORIZONTAL CAVITY FILLED WITH NON-NEWTONIAN POWER-LAW FLUIDS.
ICHMT DIGITAL LIBRARY ONLINE, Vol.13, 2008, issue
Ahmed Bahlaoui, Mohammed Hasnaoui, Mohamed Lamsaadi, Abdelghani Raji, Mohamed Naimi, Taoufik Makayssi
MIXED CONVECTION HEAT TRANSFER FLOW OF AIR INSIDE A SINUSOIDAL CORRUGATED CAVITY WITH A HEAT-CONDUCTING HORIZONTAL CIRCULAR CYLINDER
Journal of Enhanced Heat Transfer, Vol.18, 2011, issue 5
Salam Hadi Hussain, Qusay Rashid Abd-Amer
THE EFFECTS OF POROSITY AND MASS-TO-THERMAL DRIVE RATIO ON AIDING AND OPPOSING CONVECTION IN POROUS ENCLOSURES
Journal of Enhanced Heat Transfer, Vol.25, 2018, issue 4-5
Marcelo J. S. de Lemos, Paulo H.S. Carvalho