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

Zhang, Zhonggang; Yue, Danting; Yang, Guogang; Chen, Jingfeng; Zheng, Yifeng; Miao, He; Wang, Weiguo; Yuan, Jinliang LU and Huang, Naibao (2015) In International Journal of Heat and Mass Transfer 84. p.942-954
Abstract
In this study, a three-dimensional computational fluid dynamics (CFD) model is developed and applied for anode-supported planar SOFC involving multi-channels. The developed model is first validated in agreement with the experimental data obtained at same conditions. Three different flow arrangements (co-, counter- and cross-flow) are simulated and compared in terms of cell overall performance and various transport phenomena occurred inside the SOFC single cell functional components. Local distribution of temperature, mass flow rate, current density, gas concentrations of reactants and products in both fuel and air sides under different flow arrangements is predicted and presented. It is found that the co-flow and counter-flow arrangements... (More)
In this study, a three-dimensional computational fluid dynamics (CFD) model is developed and applied for anode-supported planar SOFC involving multi-channels. The developed model is first validated in agreement with the experimental data obtained at same conditions. Three different flow arrangements (co-, counter- and cross-flow) are simulated and compared in terms of cell overall performance and various transport phenomena occurred inside the SOFC single cell functional components. Local distribution of temperature, mass flow rate, current density, gas concentrations of reactants and products in both fuel and air sides under different flow arrangements is predicted and presented. It is found that the co-flow and counter-flow arrangements have a better performance than that of the cross-flow arrangement at the same operating conditions. It is also found that the temperature for the three flow arrangements is unevenly distributed and the significant temperature gradients exist along the length of the cell. The mass flow rate of fuel at the inlet of each channel is uniform, however its difference between the side channel and the channel at the center is increasing along the fuel flow direction, which reaches a maximum value at the outlet region. It is also predicted that the maximum current density is located at the interfaces between the channels, ribs and the electrodes resulting in a large over-potential and a heat source in the electrodes, which is harmful to the cell overall performance and working life time. (C) 2015 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Simulation, Multi-channel SOFC, Flow arrangements, Electrochemical, reaction, Three dimensional CFD model, Transport phenomena
in
International Journal of Heat and Mass Transfer
volume
84
pages
942 - 954
publisher
Pergamon
external identifiers
  • wos:000351799000094
  • scopus:84922732028
ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2015.01.097
language
English
LU publication?
yes
id
25844059-9455-44f2-be3e-8aae085d7f07 (old id 5277712)
date added to LUP
2015-04-24 09:13:35
date last changed
2017-08-27 03:25:38
@article{25844059-9455-44f2-be3e-8aae085d7f07,
  abstract     = {In this study, a three-dimensional computational fluid dynamics (CFD) model is developed and applied for anode-supported planar SOFC involving multi-channels. The developed model is first validated in agreement with the experimental data obtained at same conditions. Three different flow arrangements (co-, counter- and cross-flow) are simulated and compared in terms of cell overall performance and various transport phenomena occurred inside the SOFC single cell functional components. Local distribution of temperature, mass flow rate, current density, gas concentrations of reactants and products in both fuel and air sides under different flow arrangements is predicted and presented. It is found that the co-flow and counter-flow arrangements have a better performance than that of the cross-flow arrangement at the same operating conditions. It is also found that the temperature for the three flow arrangements is unevenly distributed and the significant temperature gradients exist along the length of the cell. The mass flow rate of fuel at the inlet of each channel is uniform, however its difference between the side channel and the channel at the center is increasing along the fuel flow direction, which reaches a maximum value at the outlet region. It is also predicted that the maximum current density is located at the interfaces between the channels, ribs and the electrodes resulting in a large over-potential and a heat source in the electrodes, which is harmful to the cell overall performance and working life time. (C) 2015 Elsevier Ltd. All rights reserved.},
  author       = {Zhang, Zhonggang and Yue, Danting and Yang, Guogang and Chen, Jingfeng and Zheng, Yifeng and Miao, He and Wang, Weiguo and Yuan, Jinliang and Huang, Naibao},
  issn         = {0017-9310},
  keyword      = {Simulation,Multi-channel SOFC,Flow arrangements,Electrochemical,reaction,Three dimensional CFD model,Transport phenomena},
  language     = {eng},
  pages        = {942--954},
  publisher    = {Pergamon},
  series       = {International Journal of Heat and Mass Transfer},
  title        = {Three-dimensional CFD modeling of transport phenomena in multi-channel anode-supported planar SOFCs},
  url          = {http://dx.doi.org/10.1016/j.ijheatmasstransfer.2015.01.097},
  volume       = {84},
  year         = {2015},
}