Unsteady convection heat transfer for a porous square cylinder varying cylinder-to-channel height ratio

Shiang Wuu Perng; Horng Wen Wu; Ren Hung Wang; Tswen Chyuan Jue

doi:10.1016/j.ijthermalsci.2011.02.018

Unsteady convection heat transfer for a porous square cylinder varying cylinder-to-channel height ratio

Shiang Wuu Perng, Horng Wen Wu, Ren Hung Wang, Tswen Chyuan Jue

Department of Systems and Naval Mechatronic Engineering

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The unsteady laminar flow and forced convection heat transfer have been numerically investigated across the porous square cylinder with the heated cylinder bottom at the axis in the channel changing cylinder-to-channel height ratio of 10%, 30%, and 50%. The other parameters include Reynolds number (50∼250), Darcy number (10^-6∼10^-2), and porosity (0.4∼0.8). The pressure drops are also examined for the flow past the porous square cylinder in the channels for all cases. The results indicate that the heat transfer for the square porous cylinder is enhanced as cylinder-to-channel height ratio increases; in particular, the enhancement is more obvious for a higher Darcy number and porosity.

Original language	English
Pages (from-to)	2006-2015
Number of pages	10
Journal	International Journal of Thermal Sciences
Volume	50
Issue number	10
DOIs	https://doi.org/10.1016/j.ijthermalsci.2011.02.018
Publication status	Published - 2011 Oct

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Engineering(all)

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10.1016/j.ijthermalsci.2011.02.018

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title = "Unsteady convection heat transfer for a porous square cylinder varying cylinder-to-channel height ratio",

abstract = "The unsteady laminar flow and forced convection heat transfer have been numerically investigated across the porous square cylinder with the heated cylinder bottom at the axis in the channel changing cylinder-to-channel height ratio of 10%, 30%, and 50%. The other parameters include Reynolds number (50∼250), Darcy number (10-6∼10-2), and porosity (0.4∼0.8). The pressure drops are also examined for the flow past the porous square cylinder in the channels for all cases. The results indicate that the heat transfer for the square porous cylinder is enhanced as cylinder-to-channel height ratio increases; in particular, the enhancement is more obvious for a higher Darcy number and porosity.",

author = "Perng, {Shiang Wuu} and Wu, {Horng Wen} and Wang, {Ren Hung} and Jue, {Tswen Chyuan}",

note = "Funding Information: The authors gratefully acknowledge the partial financial support of this project by the National Council of the Republic of China .",

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T1 - Unsteady convection heat transfer for a porous square cylinder varying cylinder-to-channel height ratio

AU - Perng, Shiang Wuu

AU - Wu, Horng Wen

AU - Wang, Ren Hung

AU - Jue, Tswen Chyuan

N1 - Funding Information: The authors gratefully acknowledge the partial financial support of this project by the National Council of the Republic of China .

PY - 2011/10

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N2 - The unsteady laminar flow and forced convection heat transfer have been numerically investigated across the porous square cylinder with the heated cylinder bottom at the axis in the channel changing cylinder-to-channel height ratio of 10%, 30%, and 50%. The other parameters include Reynolds number (50∼250), Darcy number (10-6∼10-2), and porosity (0.4∼0.8). The pressure drops are also examined for the flow past the porous square cylinder in the channels for all cases. The results indicate that the heat transfer for the square porous cylinder is enhanced as cylinder-to-channel height ratio increases; in particular, the enhancement is more obvious for a higher Darcy number and porosity.

AB - The unsteady laminar flow and forced convection heat transfer have been numerically investigated across the porous square cylinder with the heated cylinder bottom at the axis in the channel changing cylinder-to-channel height ratio of 10%, 30%, and 50%. The other parameters include Reynolds number (50∼250), Darcy number (10-6∼10-2), and porosity (0.4∼0.8). The pressure drops are also examined for the flow past the porous square cylinder in the channels for all cases. The results indicate that the heat transfer for the square porous cylinder is enhanced as cylinder-to-channel height ratio increases; in particular, the enhancement is more obvious for a higher Darcy number and porosity.

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Unsteady convection heat transfer for a porous square cylinder varying cylinder-to-channel height ratio

Abstract

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