Entropy generation for forced convection in a porous saturated circular tube with uniform wall temperature

A numerical study is reported to investigate both the First and the Second Law of Thermodynamics for thermally developing forced convection in a circular tube filled by a saturated porous medium, with uniform wall temperature, and with the effects of viscous dissipation included. A theoretical analy...

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Vydáno v:International communications in heat and mass transfer Ročník 34; číslo 4; s. 408 - 419
Hlavní autoři: Hooman, K., Ejlali, A.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY Elsevier Ltd 01.04.2007
Elsevier
Témata:
Bejan number
Brinkman number
Convective and constrained heat transfer
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Heat transfer
Heat transfer in inhomogeneous media, in porous media, and through interfaces
Physics
Porous media
Theoretical
Thermal development
Porous media
Bejan number
Thermal development
Brinkman number
Theoretical
Temperature distribution
Forced convection
Nusselt number
Digital simulation
Circular pipe
Theoretical study
Boundary conditions
Entropy
Modelling
Viscous dissipation
Saturated porous medium
Heat transfer
ISSN:0735-1933, 1879-0178
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Popis
Shrnutí:A numerical study is reported to investigate both the First and the Second Law of Thermodynamics for thermally developing forced convection in a circular tube filled by a saturated porous medium, with uniform wall temperature, and with the effects of viscous dissipation included. A theoretical analysis is also presented to study the problem for the asymptotic region applying the perturbation solution of the Brinkman momentum equation reported by (K. Hooman, K., A.A. Ranjbar-Kani, A perturbation based analysis to investigate forced convection in a porous saturated tube, Journal of Computational and Applied Mathematics 162 (2) (2004) 411–419.). Expressions are reported for the temperature profile, the Nusselt number, the Bejan number, and the dimensionless entropy generation rate in the asymptotic region. Numerical results are found to be in good agreement with theoretical counterparts.
ISSN:0735-1933
1879-0178
DOI:10.1016/j.icheatmasstransfer.2006.10.008