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Three-dimensional CFD modeling of transport phenomena in anode-supported planar SOFCs

Zhang, Zhonggang; Yue, Danting; He, Changrong; Ye, Shuang; Wang, Weiguo and Yuan, Jinliang LU (2014) In Heat and Mass Transfer 50(11). p.1575-1586
Abstract
In this study, a three-dimensional computational fluid dynamics model has been developed for an anode-supported planar SOFC. The conservation equations of mass, momentum, species/charges and thermal energy are solved by finite volume method for a complete unit cell consisting of 13 parallel channels in both anode and cathode. The simulation results of the developed model are well in agreement with the experimental data obtained at same conditions. In this study, the co-flow arrangement with hydrogen utilization of 60 % and operating voltage of 0.7 V is used as the base case, and compared with the counter-flow arrangement. The predicted results reveals that the maximum temperature obtained in the counter-flow arrangement is about 10 A... (More)
In this study, a three-dimensional computational fluid dynamics model has been developed for an anode-supported planar SOFC. The conservation equations of mass, momentum, species/charges and thermal energy are solved by finite volume method for a complete unit cell consisting of 13 parallel channels in both anode and cathode. The simulation results of the developed model are well in agreement with the experimental data obtained at same conditions. In this study, the co-flow arrangement with hydrogen utilization of 60 % and operating voltage of 0.7 V is used as the base case, and compared with the counter-flow arrangement. The predicted results reveals that the maximum temperature obtained in the counter-flow arrangement is about 10 A degrees C lower than that of co-flow, but the counter-flow arrangement has a higher temperature gradient between the respective anodes and cathodes in a cross-section normal to the main flow direction, especially in the air inlet region of the cell (x = 0.04 m),which is very harmful to the lifetime of materials. The current density is very unevenly distributed along and normal to the flow direction for both the co- and counter-flow arrangements, and the maximum values occur at junctions of the electrodes, channels and ribs, which causes higher over-potentials and ohmic heating. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Heat and Mass Transfer
volume
50
issue
11
pages
1575 - 1586
publisher
Springer
external identifiers
  • wos:000343753800009
  • scopus:84911006546
ISSN
1432-1181
DOI
10.1007/s00231-014-1356-7
language
English
LU publication?
yes
id
1fd04146-c8ce-40b0-baa0-c25ae7640b98 (old id 4876069)
date added to LUP
2014-12-23 09:31:46
date last changed
2017-01-01 03:37:32
@article{1fd04146-c8ce-40b0-baa0-c25ae7640b98,
  abstract     = {In this study, a three-dimensional computational fluid dynamics model has been developed for an anode-supported planar SOFC. The conservation equations of mass, momentum, species/charges and thermal energy are solved by finite volume method for a complete unit cell consisting of 13 parallel channels in both anode and cathode. The simulation results of the developed model are well in agreement with the experimental data obtained at same conditions. In this study, the co-flow arrangement with hydrogen utilization of 60 % and operating voltage of 0.7 V is used as the base case, and compared with the counter-flow arrangement. The predicted results reveals that the maximum temperature obtained in the counter-flow arrangement is about 10 A degrees C lower than that of co-flow, but the counter-flow arrangement has a higher temperature gradient between the respective anodes and cathodes in a cross-section normal to the main flow direction, especially in the air inlet region of the cell (x = 0.04 m),which is very harmful to the lifetime of materials. The current density is very unevenly distributed along and normal to the flow direction for both the co- and counter-flow arrangements, and the maximum values occur at junctions of the electrodes, channels and ribs, which causes higher over-potentials and ohmic heating.},
  author       = {Zhang, Zhonggang and Yue, Danting and He, Changrong and Ye, Shuang and Wang, Weiguo and Yuan, Jinliang},
  issn         = {1432-1181},
  language     = {eng},
  number       = {11},
  pages        = {1575--1586},
  publisher    = {Springer},
  series       = {Heat and Mass Transfer},
  title        = {Three-dimensional CFD modeling of transport phenomena in anode-supported planar SOFCs},
  url          = {http://dx.doi.org/10.1007/s00231-014-1356-7},
  volume       = {50},
  year         = {2014},
}