A Local Thermal Non-Equilibrium Analysis of Fully Developed Forced Convective Flow in a Tube Filled with a Porous Medium
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Abstract
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A local thermal non-equilibrium model has been considered for the case of thermally fully developed flow within a constant heat flux tube filled with a porous medium. Exact temperature profiles for the fluid and solid phases are found after combining the two individual energy equations and then transforming them into a single ordinary differential equation with respect to the temperature difference between the solid phase and the wall subject to constant heat flux. The exact solutions for the case of metal-foam and air combination reveal that the local thermal equilibrium assumption may fail for the case of constant heat flux wall. The Nusselt number is presented as a function of the Peclet number, which shows a significant increase due to both high stagnant thermal conductivity and thermal dispersion resulting from the presence of the metal-foam.
Journal
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- Transport in Porous Media
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Transport in Porous Media 89 (2), 237-249, 2011-05-12
Springer
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Details 詳細情報について
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- CRID
- 1050001338868581632
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- NII Article ID
- 120003368389
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- NII Book ID
- AA10687711
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- ISSN
- 01693913
- 15731634
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- HANDLE
- 10297/6169
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- CiNii Articles