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Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v11.i6.40
pages 557-574

Entropy Generation for Pulsating Flow in a Composite Fluid/Porous System

Dhahri Hacen
National school of Engineers Laboratory of Thermal and Energy Systems Studies Monastir University, Ibn Eljazzar Street, 5019 Monastir, Tunisia
Khalifa Slimi
ISTLS
Sassi Ben Nasrallah
Laboratoire d'Études des Systèmes Thermiques et Énergétiques, Ecole Nationale d'Ingénieurs de Monastir, Monastir 5019 Tunisie

要約

A numerical study of entropy generation for pulsating flow within a cylinder partially filled with a porous medium and exposed to a constant heat flux at the wall was carried out in the laminar flow regime. The porous substrate is attached to the inner side of the cylinder axis, while the upper side is filled with a pure fluid phase. The flow within the porous domain is modeled by the Brinkman-Lapwood-Forchheimer-extended Darcy model. The mathematical model for energy transport is based on the local thermal equilibrium assumption. The control volume-based finite element method is used to solve the differential system equations with an unequal order velocity-pressure interpolation. The obtained numerical code was validated with the closest available published results. A good agreement was shown. The numerical results of the flow, heat transfer, and entropy generation are presented and discussed. A comprehensive analysis of the influence of the amplitude pulsation, the frequency pulsation, the thermal conductivity ratio, the Darcy number, the porous layer thickness, and the modified Brinkman number on the entropy generation rate, as well as on the Bejan number, is also investigated.


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