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Journal of Enhanced Heat Transfer
IF: 0.562 5-Year IF: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Print: 1065-5131
ISSN Online: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2011001768
pages 547-560

COMPRESSIBLE FLOW AND HEAT TRANSFER THROUGH A POROUS REGENERATOR UNDER PISTON MOTION

Nessrine Zahi
Ecole Nationale d'Ingenieur de Monastir, Laboratoire d'Etude des Systémes Thermiques et Energétiques, Rue Ibn, Eljazar, 5019 Monastir, Tunisie
Hacen Dhahri
Laboratory of Thermal and Energy Systems Studies, National School of Engineers, Monastir University, Monastir, Tunisia
A. Boughamoura
Laboratoire d'Etudes des Systèmes Thermiques et Energétiques, Ecole Nationale d'Ingénieurs de Monastir, Rue Ibn Eljazzar, 5019 Monastir, Tunisie
Sassi Ben Nasrallah
Laboratoire d'Études des Systèmes Thermiques et Énergétiques, Ecole Nationale d'Ingénieurs de Monastir, Monastir 5019 Tunisie

ABSTRACT

The laminar compressible flow in a pipe partially filled with porous media (a regenerator) is studied numerically during an expansion stroke. The computations are based on the finite-element-based control volume method for a moved grid, and the SIMPLER algorithm has been implemented. The physical model for the momentum conservation equation makes use of the Brinkman−Lapwood−Forchheimer-extended Darcy model for the porous matrix. The fluid structure and the heat transfer are analyzed for different Reynolds numbers, Darcy numbers, porosities, thermal conductivity ratios, and heat capacity ratios.


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