Numerical investigation of heat transfer enhancement on a porous vortex-generator applied to a block-heated channel

Shiang Wuu Perng, Horng Wen Wu, Tswen Chyuan Jue

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The numerical simulation is used to obtain the unsteady laminar flow and convective heat transfer in the block-heated channel with the porous vortex-generator. The general Darcy-Brinkman-Forchheimer model is adopted for the porous vortex-generator. The parameters studies including porosity, Darcy number, width-to-height ratio of porous vortex-generator and Reynolds number have been explored on heat transfer enhancement and vortex-induced vibration in detail. The results indicate that heat transfer enhancement and vortex-induced vibration increase with increasing Reynolds number and width-to-height ratio. However, the porosity has slight influence on heat transfer enhancement and vortex-induced vibration. When Darcy number is 10 -3 or 10 -4, installing a porous vortex-generator with B/h = 1.0 improves overall heat transfer the best along heated blocks, and has a strong reduction of vortex-induced vibration.

Original languageEnglish
Pages (from-to)3121-3137
Number of pages17
JournalInternational Journal of Heat and Mass Transfer
Volume55
Issue number11-12
DOIs
Publication statusPublished - 2012 May 1

Fingerprint

vortex generators
Gas generators
Vortex flow
heat transfer
vortices
Heat transfer
vibration
augmentation
Reynolds number
porosity
convective heat transfer
laminar flow
installing
Porosity
Laminar flow
simulation
Computer simulation

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "The numerical simulation is used to obtain the unsteady laminar flow and convective heat transfer in the block-heated channel with the porous vortex-generator. The general Darcy-Brinkman-Forchheimer model is adopted for the porous vortex-generator. The parameters studies including porosity, Darcy number, width-to-height ratio of porous vortex-generator and Reynolds number have been explored on heat transfer enhancement and vortex-induced vibration in detail. The results indicate that heat transfer enhancement and vortex-induced vibration increase with increasing Reynolds number and width-to-height ratio. However, the porosity has slight influence on heat transfer enhancement and vortex-induced vibration. When Darcy number is 10 -3 or 10 -4, installing a porous vortex-generator with B/h = 1.0 improves overall heat transfer the best along heated blocks, and has a strong reduction of vortex-induced vibration.",
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Numerical investigation of heat transfer enhancement on a porous vortex-generator applied to a block-heated channel. / Perng, Shiang Wuu; Wu, Horng Wen; Jue, Tswen Chyuan.

In: International Journal of Heat and Mass Transfer, Vol. 55, No. 11-12, 01.05.2012, p. 3121-3137.

Research output: Contribution to journalArticle

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AB - The numerical simulation is used to obtain the unsteady laminar flow and convective heat transfer in the block-heated channel with the porous vortex-generator. The general Darcy-Brinkman-Forchheimer model is adopted for the porous vortex-generator. The parameters studies including porosity, Darcy number, width-to-height ratio of porous vortex-generator and Reynolds number have been explored on heat transfer enhancement and vortex-induced vibration in detail. The results indicate that heat transfer enhancement and vortex-induced vibration increase with increasing Reynolds number and width-to-height ratio. However, the porosity has slight influence on heat transfer enhancement and vortex-induced vibration. When Darcy number is 10 -3 or 10 -4, installing a porous vortex-generator with B/h = 1.0 improves overall heat transfer the best along heated blocks, and has a strong reduction of vortex-induced vibration.

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