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Buoyancy Effects on Developing Laminar Gas Flow and Heat Transfer in a Rectangular Fuel Cell Duct

Yuan, Jinliang LU ; Rokni, Masoud LU and Sundén, Bengt LU (2001) In Numerical Heat Transfer Part A: Applications 39. p.801-822
Abstract
Using a general 3-D finite-volume code, the development of buoyancy force driven secondary flow and its effects on developing laminar flow and heat transfer have been numerically simulated for a horizontal fuel cell duct with a rectangular cross section. The constant

thermal-properties assumption except for linear density variation with temperature in the

body force term is applied, and a constant heat flux is prescribed on the bottom wall,

while thermal insulation is implemented on the other three walls. The secondary flow forms

vortices in the duct that can disrupt both the hydrodynamic and thermal boundary layer and enhance friction factor and heat transfer. Calculations have been performed to... (More)
Using a general 3-D finite-volume code, the development of buoyancy force driven secondary flow and its effects on developing laminar flow and heat transfer have been numerically simulated for a horizontal fuel cell duct with a rectangular cross section. The constant

thermal-properties assumption except for linear density variation with temperature in the

body force term is applied, and a constant heat flux is prescribed on the bottom wall,

while thermal insulation is implemented on the other three walls. The secondary flow forms

vortices in the duct that can disrupt both the hydrodynamic and thermal boundary layer and enhance friction factor and heat transfer. Calculations have been performed to determine the effects of various Grashof number Gr* and Reynolds number Re. Comparisons of these numerical results with available existing data are presented. This study may

be regarded as an improved modeling procedure for gas flow and convective heat transfer

in fuel cell ducts. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Numerical Heat Transfer Part A: Applications
volume
39
pages
801 - 822
publisher
Taylor & Francis
external identifiers
  • scopus:0000174905
ISSN
1040-7782
language
English
LU publication?
yes
id
47ceac14-86fb-4d3d-a2c7-fcc3356e9517 (old id 621002)
date added to LUP
2008-02-13 10:59:30
date last changed
2018-01-07 09:12:23
@article{47ceac14-86fb-4d3d-a2c7-fcc3356e9517,
  abstract     = {Using a general 3-D finite-volume code, the development of buoyancy force driven secondary flow and its effects on developing laminar flow and heat transfer have been numerically simulated for a horizontal fuel cell duct with a rectangular cross section. The constant<br/><br>
thermal-properties assumption except for linear density variation with temperature in the<br/><br>
body force term is applied, and a constant heat flux is prescribed on the bottom wall,<br/><br>
while thermal insulation is implemented on the other three walls. The secondary flow forms<br/><br>
vortices in the duct that can disrupt both the hydrodynamic and thermal boundary layer and enhance friction factor and heat transfer. Calculations have been performed to determine the effects of various Grashof number Gr* and Reynolds number Re. Comparisons of these numerical results with available existing data are presented. This study may<br/><br>
be regarded as an improved modeling procedure for gas flow and convective heat transfer<br/><br>
in fuel cell ducts.},
  author       = {Yuan, Jinliang and Rokni, Masoud and Sundén, Bengt},
  issn         = {1040-7782},
  language     = {eng},
  pages        = {801--822},
  publisher    = {Taylor & Francis},
  series       = {Numerical Heat Transfer Part A: Applications},
  title        = {Buoyancy Effects on Developing Laminar Gas Flow and Heat Transfer in a Rectangular Fuel Cell Duct},
  volume       = {39},
  year         = {2001},
}