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.
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April 2013
This article was originally published in
Journal of Fuel Cell Science and Technology
Research-Article
Simulation of Surface Reactions and Multiscale Transport Processes in a Composite Anode Domain Relevant for Solid Oxide Fuel Cells
Jinliang Yuan,
Jinliang Yuan
1
Department of Energy Sciences,
e-mail: Jinliang.yuan@energy.lth.se
Lund University
,Box 118
,22100 Lund
, Sweden
e-mail: Jinliang.yuan@energy.lth.se
1Corresponding author.
Search for other works by this author on:
Guogang Yang,
Guogang Yang
Marine Engineering College,
Dalian Maritime University
,Dalian 116026
, China
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Bengt Sunden
Bengt Sunden
Department of Energy Sciences,
Lund University
,Box 118
,22100 Lund
, Sweden
Search for other works by this author on:
Jinliang Yuan
Department of Energy Sciences,
e-mail: Jinliang.yuan@energy.lth.se
Lund University
,Box 118
,22100 Lund
, Sweden
e-mail: Jinliang.yuan@energy.lth.se
Guogang Yang
Marine Engineering College,
Dalian Maritime University
,Dalian 116026
, China
Bengt Sunden
Department of Energy Sciences,
Lund University
,Box 118
,22100 Lund
, Sweden
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received February 23, 2011; final manuscript received December 10, 2012; published online March 21, 2013. Assoc. Editor: Jacob Brouwer.
J. Fuel Cell Sci. Technol. Apr 2013, 10(2): 021001 (8 pages)
Published Online: March 21, 2013
Article history
Received:
February 23, 2011
Revision Received:
December 10, 2012
Citation
Yuan, J., Yang, G., and Sunden, B. (March 21, 2013). "Simulation of Surface Reactions and Multiscale Transport Processes in a Composite Anode Domain Relevant for Solid Oxide Fuel Cells." ASME. J. Fuel Cell Sci. Technol. April 2013; 10(2): 021001. https://doi.org/10.1115/1.4023540
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