The Use of Porous Fins for Heat Transfer Augmentation in Parallel-Plate Channels

Mohammad Hamdan, Moh'd A. Al-Nimr

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

In this study, a steady, fully developed laminar forced convection heat augmentation via porous fins in isothermal parallel-plate duct is numerically investigated. High-thermal conductivity porous fins are attached to the inner walls of two parallel-plate channels to enhance the heat transfer characteristics of the flow under consideration. The Darcy-Brinkman-Forchheimer model is used to model the flow inside the porous fins. This study reports the effect of several operating parameters on the flow hydrodynamics and thermal characteristics. This study demonstrates, mainly, the effects of porous fin thickness, Darcy number, thermal conductivity ratio, Reynolds number, and microscopic inertial coefficient on the thermal performance of the present flow. It is found that the highest Nusselt number is achieved at fully filled porous duct which requires the highest pumping pressure. The results show that using porous fins requires less pumping pressure with comparable high heat augmentation weight against fully filled porous duct. It is found that higher Nusselt numbers are achieved by increasing the microscopic inertial coefficient (A), the Reynolds number (Re), and the thermal conductivity of the porous substrate k2. The results show that heat transfer can be enhanced (1) with the use of high thermal conductivity fins, (2) by decreasing the Darcy number, and (3) by increasing microscopic inertial coefficient.

Original languageEnglish
Pages (from-to)409-420
Number of pages12
JournalTransport in Porous Media
Volume84
Issue number2
DOIs
Publication statusPublished - Jan 1 2010

Keywords

  • Darcy-Brinkman-Forchheimer model
  • Heat exchanger
  • Heat transfer enhancement
  • Porous fin

ASJC Scopus subject areas

  • Catalysis
  • Chemical Engineering(all)

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