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Technical Brief

EFFECT OF BUOYANCY RATIO AND MEDIUM PROPERTIES ON LAMINAR DOUBLE-DIFFUSIVE FREE CONVECTION IN A POROUS CAVITY

[+] Author and Article Information
Paulo H.S. Carvalho

Departamento de Energia - IEME Instituto Tecnológico de Aeronáutica - ITA 12228-900 - São José dos Campos - SP, Brazil
phsalles82@hotmail.com

Marcelo J.S. de Lemos

Departamento de Energia - IEME Instituto Tecnológico de Aeronáutica - ITA 12228-900 - São José dos Campos - SP, Brazil
delemos@ita.br

1Corresponding author.

ASME doi:10.1115/1.4036617 History: Received October 28, 2016; Revised April 20, 2017

Abstract

This work presents a study on double-diffusive free convection in a porous square cavity with thermal equilibrium model. Transport equations are discretized using the control-volume method and the system of algebraic equations is relaxed via the SIMPLE algorithm. The effect of ks/kf on average Nusselt and Sherwood values was investigated. Results show that ks/kf affects Nuw and Shw boosting mass transfer at the expense of reducing overall heat transport through the enclosure.

Copyright (c) 2017 by ASME
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