Analysis of fluid flow and heat transfer in a channel with staggered porous blocks

Hongyu Li, K. C. Leong, L. W. Jin, J. C. Chai

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Fluid flow and heat transfer characteristics in a channel with staggered porous blocks were numerically studied in this paper. The Navier-Stokes and Brinkman-Forchheimer equations were used to model the fluid flow in the open and porous regions, respectively. Coupling of the pressure and velocity fields was resolved using the SIMPLER algorithm. The local thermal equilibrium model was adopted in the energy equation to evaluate the solid and fluid temperatures. The effect of Darcy number, Reynolds number, porous block height and width on the velocity field were studied. In addition, the effects of the above parameters as well as the thermal conductivity ratio between the porous blocks and the fluid on the local heat transfer were analyzed. The pressure drops across the channel for different cases were discussed. The results show that the flow behavior and its associated local heat transfer are sensitive to the variation of the above parameters. It is predicted by the present study that an increase in the thermal conductivity ratio between the porous blocks and the fluid results in significant enhancement of heat transfer at the locations of the porous blocks.

Original languageEnglish
Pages (from-to)950-962
Number of pages13
JournalInternational Journal of Thermal Sciences
Volume49
Issue number6
Early online date6 Feb 2010
DOIs
Publication statusPublished - Jun 2010
Externally publishedYes

Fingerprint

fluid flow
Flow of fluids
heat transfer
Heat transfer
Fluids
fluids
Thermal conductivity
thermal conductivity
velocity distribution
pressure drop
pressure distribution
Pressure drop
Reynolds number
augmentation
Temperature
temperature
energy

Cite this

@article{64791b37acd04839956fe1c6c53ddd93,
title = "Analysis of fluid flow and heat transfer in a channel with staggered porous blocks",
abstract = "Fluid flow and heat transfer characteristics in a channel with staggered porous blocks were numerically studied in this paper. The Navier-Stokes and Brinkman-Forchheimer equations were used to model the fluid flow in the open and porous regions, respectively. Coupling of the pressure and velocity fields was resolved using the SIMPLER algorithm. The local thermal equilibrium model was adopted in the energy equation to evaluate the solid and fluid temperatures. The effect of Darcy number, Reynolds number, porous block height and width on the velocity field were studied. In addition, the effects of the above parameters as well as the thermal conductivity ratio between the porous blocks and the fluid on the local heat transfer were analyzed. The pressure drops across the channel for different cases were discussed. The results show that the flow behavior and its associated local heat transfer are sensitive to the variation of the above parameters. It is predicted by the present study that an increase in the thermal conductivity ratio between the porous blocks and the fluid results in significant enhancement of heat transfer at the locations of the porous blocks.",
keywords = "Fluid flow, Local heat transfer, Porous media, Staggered porous blocks",
author = "Hongyu Li and Leong, {K. C.} and Jin, {L. W.} and Chai, {J. C.}",
year = "2010",
month = "6",
doi = "10.1016/j.ijthermalsci.2010.01.006",
language = "English",
volume = "49",
pages = "950--962",
journal = "International Journal of Thermal Sciences",
issn = "1290-0729",
publisher = "Elsevier",
number = "6",

}

Analysis of fluid flow and heat transfer in a channel with staggered porous blocks. / Li, Hongyu; Leong, K. C.; Jin, L. W.; Chai, J. C.

In: International Journal of Thermal Sciences, Vol. 49, No. 6, 06.2010, p. 950-962.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Analysis of fluid flow and heat transfer in a channel with staggered porous blocks

AU - Li, Hongyu

AU - Leong, K. C.

AU - Jin, L. W.

AU - Chai, J. C.

PY - 2010/6

Y1 - 2010/6

N2 - Fluid flow and heat transfer characteristics in a channel with staggered porous blocks were numerically studied in this paper. The Navier-Stokes and Brinkman-Forchheimer equations were used to model the fluid flow in the open and porous regions, respectively. Coupling of the pressure and velocity fields was resolved using the SIMPLER algorithm. The local thermal equilibrium model was adopted in the energy equation to evaluate the solid and fluid temperatures. The effect of Darcy number, Reynolds number, porous block height and width on the velocity field were studied. In addition, the effects of the above parameters as well as the thermal conductivity ratio between the porous blocks and the fluid on the local heat transfer were analyzed. The pressure drops across the channel for different cases were discussed. The results show that the flow behavior and its associated local heat transfer are sensitive to the variation of the above parameters. It is predicted by the present study that an increase in the thermal conductivity ratio between the porous blocks and the fluid results in significant enhancement of heat transfer at the locations of the porous blocks.

AB - Fluid flow and heat transfer characteristics in a channel with staggered porous blocks were numerically studied in this paper. The Navier-Stokes and Brinkman-Forchheimer equations were used to model the fluid flow in the open and porous regions, respectively. Coupling of the pressure and velocity fields was resolved using the SIMPLER algorithm. The local thermal equilibrium model was adopted in the energy equation to evaluate the solid and fluid temperatures. The effect of Darcy number, Reynolds number, porous block height and width on the velocity field were studied. In addition, the effects of the above parameters as well as the thermal conductivity ratio between the porous blocks and the fluid on the local heat transfer were analyzed. The pressure drops across the channel for different cases were discussed. The results show that the flow behavior and its associated local heat transfer are sensitive to the variation of the above parameters. It is predicted by the present study that an increase in the thermal conductivity ratio between the porous blocks and the fluid results in significant enhancement of heat transfer at the locations of the porous blocks.

KW - Fluid flow

KW - Local heat transfer

KW - Porous media

KW - Staggered porous blocks

UR - http://www.scopus.com/inward/record.url?scp=77950019435&partnerID=8YFLogxK

U2 - 10.1016/j.ijthermalsci.2010.01.006

DO - 10.1016/j.ijthermalsci.2010.01.006

M3 - Article

VL - 49

SP - 950

EP - 962

JO - International Journal of Thermal Sciences

JF - International Journal of Thermal Sciences

SN - 1290-0729

IS - 6

ER -