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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v36.i12.150
pages 132-140

Effects of Temperature-Dependent Viscosity on Thermally Developing Forced Convection through a Porous Medium

Kamel Hooman
Mechanical Engineering Department, Persian Gulf University, Bushehr 75168, Iran

RÉSUMÉ

Thermally developing laminar flows in ducts with temperature-dependent viscosity variation are analyzed, where the Arrhenius model for the variation of the viscosity with the temperature is made. The Darcy flow model is assumed. The case of isoflux boundaries is treated. For a fluid whose viscosity decreases with temperature, it is found that the effect of the variation is to reduce/increase the Nusselt number for cooled/heated walls.


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