Heat transfer augmentation and vortex-induced vibration in a block-heated channel

Shiang Wuu Perng, Horng-Wen Wu, Tswen Chyuan Jue

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The finite element method is used to solve the general Darcy-Brinkman- Forchheimer model and energy equation for the heat transfer augmentation and vortex-induced vibration from the square vortex-generator wrapped by a porous sheath in the block-heated channel. The heat transfer augmentation and vortex-induced vibration have been investigated by varying Darcy number, porosity, porous sheath thickness, and Reynolds number. The results show that as Reynolds number and porous sheath thickness increase, heat transfer augmentation and vortex-induced vibration increase. Nevertheless, the porosity slightly influences the heat transfer augmentation and vortex-induced vibration. As Darcy number equals 10-4, a small vortex-generator wrapped with a porous sheath of EP/w = 0.125 best augments overall heat transfer from the heated-block surfaces with a reduction of 53.94% in vortex-induced vibration.

Original languageEnglish
Pages (from-to)18-33
Number of pages16
JournalInternational Journal of Thermal Sciences
Volume79
DOIs
Publication statusPublished - 2014 May 1

Fingerprint

Vortex flow
sheaths
heat transfer
vortices
Heat transfer
vibration
augmentation
vortex generators
Reynolds number
porosity
Porosity
Gas generators
finite element method
Finite element method
energy

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Condensed Matter Physics

Cite this

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title = "Heat transfer augmentation and vortex-induced vibration in a block-heated channel",
abstract = "The finite element method is used to solve the general Darcy-Brinkman- Forchheimer model and energy equation for the heat transfer augmentation and vortex-induced vibration from the square vortex-generator wrapped by a porous sheath in the block-heated channel. The heat transfer augmentation and vortex-induced vibration have been investigated by varying Darcy number, porosity, porous sheath thickness, and Reynolds number. The results show that as Reynolds number and porous sheath thickness increase, heat transfer augmentation and vortex-induced vibration increase. Nevertheless, the porosity slightly influences the heat transfer augmentation and vortex-induced vibration. As Darcy number equals 10-4, a small vortex-generator wrapped with a porous sheath of EP/w = 0.125 best augments overall heat transfer from the heated-block surfaces with a reduction of 53.94{\%} in vortex-induced vibration.",
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Heat transfer augmentation and vortex-induced vibration in a block-heated channel. / Perng, Shiang Wuu; Wu, Horng-Wen; Jue, Tswen Chyuan.

In: International Journal of Thermal Sciences, Vol. 79, 01.05.2014, p. 18-33.

Research output: Contribution to journalArticle

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AU - Perng, Shiang Wuu

AU - Wu, Horng-Wen

AU - Jue, Tswen Chyuan

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AB - The finite element method is used to solve the general Darcy-Brinkman- Forchheimer model and energy equation for the heat transfer augmentation and vortex-induced vibration from the square vortex-generator wrapped by a porous sheath in the block-heated channel. The heat transfer augmentation and vortex-induced vibration have been investigated by varying Darcy number, porosity, porous sheath thickness, and Reynolds number. The results show that as Reynolds number and porous sheath thickness increase, heat transfer augmentation and vortex-induced vibration increase. Nevertheless, the porosity slightly influences the heat transfer augmentation and vortex-induced vibration. As Darcy number equals 10-4, a small vortex-generator wrapped with a porous sheath of EP/w = 0.125 best augments overall heat transfer from the heated-block surfaces with a reduction of 53.94% in vortex-induced vibration.

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