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M. M. Mousa

EFFECTS OF POROSITY AND HEAT GENERATION ON FREE CONVECTION IN A POROUS TRAPEZOIDAL CAVITY

ABSTRACT
The problem of laminar free convection in a trapezoidal enclosure, filled with a fluidsaturated porous medium and with internal heat generation has been investigated using a penalty finite element analysis. The enclosure bottom wall is heated at a constant temperature and the top wall is subjected to a constant cold temperature whereas the left inclined wall is considered to be non-isothermal and the right inclined wall is isothermally cooled. The effects of the porosity of the medium and heat generation on the isotherms and streamlinesare investigated. The rate of heat transfer from the walls of the cavity is examined as well. The Prandtl number of the fluid is chosen to be 0.7 (air) whereas the value of the Rayleigh number is selected to be 105.
KEYWORDS
finite element method, free convection, fluid-saturated porous medium, heat generation, trapezoidal cavity
PAPER SUBMITTED: 2017-09-21
PAPER REVISED: 2017-10-22
PAPER ACCEPTED: 2017-11-01
PUBLISHED ONLINE: 2017-12-03
DOI REFERENCE: https://doi.org/10.2298/TSCI170324245M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 3, PAGES [1801 - 1811]
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Effects of porosity and heat generation on free convection in a porous trapezoidal cavity

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