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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.v34.i1-2.50
7 pages

Axial Conduction Effects on Thermally Developing Forced Convection in a Porous Medium: Circular Tube with Uniform Wall Temperature

Kamel Hooman
Mechanical Engineering Department, Persian Gulf University, Bushehr 75168, Iran
A. A. Ranjbar-Kani
Mechanical Engineering Department, Faculty of Engineering, Mazandaran University, PO Box 484, Babol, Iran
Arash Ejlali
Reservoir Research Center, Azarab Co.; and Reactor-Saz Co., Engineering Deptartment, Tehran, Iran

RÉSUMÉ

This paper presents a numerical investigation of the effects of axial conduction on the thermal development of forced convection in a circular tube filled by a saturated porous medium, with uniform wall temperature. The Brinkman flow model is employed. It is observed that when the Peclet number, Pe, changes from Pe = 1 to Pe = 10, the temperature field will not change significantly. It is also found that, while the fully developed value of the Nusselt number is independent of considering the effects of axial conduction, the developing Nusselt number will be strongly affected and this fact is noticeable especially for the values of the Peclet number small enough compared to the so called values of Pe. The results showed that the developing Nusselt number increases as Pe decreases and also the fully developed region will be reached later as Pe decreases.


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