Mixed convective heat transfer past a heated square porous cylinder in a horizontal channel with varying channel height

Horng Wen Wu, Ren Hung Wang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The laminar mixed convection flow across the porous square cylinder with the heated cylinder bottom at the axis in the channel has been carried out numerically in this paper using a semi-implicit projection finite element method. The governing equations with the Brinkman-Forcheimer-extended Darcy model for the region of square porous cylinder were solved. The parameter studies including Grashof number, Darcy number, and channel-to-cylinder height ratio on heat transfer performance have been explored in detail. The results indicate that the heat transfer is augmented as the Darcy number and channel-to-cylinder height ratio increase. The buoyancy effect on the local Nusselt number is clearer for B/H=0.1 than for B/H=0.3 and B/H=0.5.

Original languageEnglish
Article number022503
JournalJournal of Heat Transfer
Volume133
Issue number2
DOIs
Publication statusPublished - 2011 Jan 1

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convective heat transfer
Engine cylinders
Heat transfer
Grashof number
Mixed convection
Nusselt number
Buoyancy
Finite element method
heat transfer
buoyancy
finite element method
convection
projection

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "The laminar mixed convection flow across the porous square cylinder with the heated cylinder bottom at the axis in the channel has been carried out numerically in this paper using a semi-implicit projection finite element method. The governing equations with the Brinkman-Forcheimer-extended Darcy model for the region of square porous cylinder were solved. The parameter studies including Grashof number, Darcy number, and channel-to-cylinder height ratio on heat transfer performance have been explored in detail. The results indicate that the heat transfer is augmented as the Darcy number and channel-to-cylinder height ratio increase. The buoyancy effect on the local Nusselt number is clearer for B/H=0.1 than for B/H=0.3 and B/H=0.5.",
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Mixed convective heat transfer past a heated square porous cylinder in a horizontal channel with varying channel height. / Wu, Horng Wen; Wang, Ren Hung.

In: Journal of Heat Transfer, Vol. 133, No. 2, 022503, 01.01.2011.

Research output: Contribution to journalArticle

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