Enhancing forced convection by inserting porous substrate in the core of a parallel-plate channel

M. O. Hamdan, M. A. Al-Nimr, M. K. Alkam

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Investigates numerically the mechanism of enhancing heat transfer by using porous substrate. The numerical investigation is carried out for transient forced convection in the developing region of a parallel-plate channel partially filled with a porous medium. A porous substrate is inserted in the channel core in order to reduce the boundary layer thickness and hence, enhance heat transfer. Darcy-Brinkman-Forchheimer model is used to simulate the physical problem. Results of the current model show that the existence of the porous substrate may improve the Nusselt number at the fully developed region by a factor of four and even higher depending on the value of Darcy number. It is found that the maximum Nusselt number is achieved at an optimum thickness. Also, the study shows that partially filled channels have better thermal performance than the totally filled ones. However, there is an optimum thickness of porous substrate, beyond it the Nusselt number starts to decline.

Original languageEnglish
Pages (from-to)502-517
Number of pages16
JournalInternational Journal of Numerical Methods for Heat and Fluid Flow
Volume10
Issue number5
DOIs
Publication statusPublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

Fingerprint

Dive into the research topics of 'Enhancing forced convection by inserting porous substrate in the core of a parallel-plate channel'. Together they form a unique fingerprint.

Cite this