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Simulation of Surface Reactions and Multiscale Transport Processes in a Composite Anode Domain Relevant for Solid Oxide Fuel Cells

Yuan, Jinliang LU ; Yang, Guogang and Sundén, Bengt LU (2013) In Journal of Fuel Cell Science and Technology 10(2).
Abstract
There are various transport phenomena (gas-phase species, heat, and momentum) occurring at different length scales in anode-supported solid oxide fuel cells (SOFCs), which are strongly affected by catalytic surface reactions at active triple-phase boundaries (TPBs) between the void space (for gas), Ni (catalysts for electrons), and YSZ (an electrolyte material for ions). To understand the multiscale chemical-reacting transport processes in the cell, a three-dimensional numerical calculation approach (the computational fluid dynamics (CFD) method) is further developed and applied for a composite domain including a porous anode, fuel gas flow channel, and solid interconnect. By calculating the rate of microscopic surface-reactions involving... (More)
There are various transport phenomena (gas-phase species, heat, and momentum) occurring at different length scales in anode-supported solid oxide fuel cells (SOFCs), which are strongly affected by catalytic surface reactions at active triple-phase boundaries (TPBs) between the void space (for gas), Ni (catalysts for electrons), and YSZ (an electrolyte material for ions). To understand the multiscale chemical-reacting transport processes in the cell, a three-dimensional numerical calculation approach (the computational fluid dynamics (CFD) method) is further developed and applied for a composite domain including a porous anode, fuel gas flow channel, and solid interconnect. By calculating the rate of microscopic surface-reactions involving the surface-phase species, the gas-phase species/heat generation and consumption related to the internal reforming reactions have been identified and implemented. The applied microscopic model for the internal reforming reactions describes the adsorption and desorption reactions of six gas-phase species and surface reactions of 12 surface-adsorbed species. The predicted results are presented and analyzed in terms of the gas-phase species and temperature distributions and compared with those predicted by employing the global reaction scheme for the internal reforming reactions. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
catalytic surface reaction, internal reforming, transport processes, multiscale, solid oxide fuel cell (SOFC)
in
Journal of Fuel Cell Science and Technology
volume
10
issue
2
article number
021001
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • wos:000326096200001
  • scopus:84880213545
ISSN
1551-6989
DOI
10.1115/1.4023540
language
English
LU publication?
yes
id
58920735-d535-44f8-861a-284ec1256493 (old id 4160153)
date added to LUP
2016-04-01 09:51:56
date last changed
2022-01-25 17:24:24
@article{58920735-d535-44f8-861a-284ec1256493,
  abstract     = {{There are various transport phenomena (gas-phase species, heat, and momentum) occurring at different length scales in anode-supported solid oxide fuel cells (SOFCs), which are strongly affected by catalytic surface reactions at active triple-phase boundaries (TPBs) between the void space (for gas), Ni (catalysts for electrons), and YSZ (an electrolyte material for ions). To understand the multiscale chemical-reacting transport processes in the cell, a three-dimensional numerical calculation approach (the computational fluid dynamics (CFD) method) is further developed and applied for a composite domain including a porous anode, fuel gas flow channel, and solid interconnect. By calculating the rate of microscopic surface-reactions involving the surface-phase species, the gas-phase species/heat generation and consumption related to the internal reforming reactions have been identified and implemented. The applied microscopic model for the internal reforming reactions describes the adsorption and desorption reactions of six gas-phase species and surface reactions of 12 surface-adsorbed species. The predicted results are presented and analyzed in terms of the gas-phase species and temperature distributions and compared with those predicted by employing the global reaction scheme for the internal reforming reactions.}},
  author       = {{Yuan, Jinliang and Yang, Guogang and Sundén, Bengt}},
  issn         = {{1551-6989}},
  keywords     = {{catalytic surface reaction; internal reforming; transport processes; multiscale; solid oxide fuel cell (SOFC)}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{American Society Of Mechanical Engineers (ASME)}},
  series       = {{Journal of Fuel Cell Science and Technology}},
  title        = {{Simulation of Surface Reactions and Multiscale Transport Processes in a Composite Anode Domain Relevant for Solid Oxide Fuel Cells}},
  url          = {{http://dx.doi.org/10.1115/1.4023540}},
  doi          = {{10.1115/1.4023540}},
  volume       = {{10}},
  year         = {{2013}},
}