Numerical analysis of transport phenomena in solid oxide fuel cell gas channels

The gas channel geometry in solid oxide fuel cells (SOFCs) influences the reacting thermo-fluid process and, thus, overall cell performance. This paper presents a dimensionless approach to the study of the transport phenomena in the gas channels of planar anode-supported proton-conducting SOFC. Out-...

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Veröffentlicht in:Fuel (Guildford) Jg. 311; S. 122557
Hauptverfasser: Sayadian, Shahide, Ghassemi, Majid, Ahmadi, Sadegh, Robinson, Anthony James
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Kidlington Elsevier Ltd 01.03.2022
Elsevier BV
Schlagworte:
Channels
Computational fluid dynamics modeling
Computer applications
Dimensionless parameters
Dynamic models
Flow channels
Fuel cells
Fuel technology
Gas channels
Mathematical models
Numerical analysis
Numerical models
Parameters
Proton-conducting electrolyte
Reduction
Solid oxide fuel cell
Solid oxide fuel cells
Temperature distribution
Transport phenomena
Two dimensional models
Computational fluid dynamics modeling
Dimensionless parameters
Proton-conducting electrolyte
Gas channels
Solid oxide fuel cell
ISSN:0016-2361, 1873-7153
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Zusammenfassung:The gas channel geometry in solid oxide fuel cells (SOFCs) influences the reacting thermo-fluid process and, thus, overall cell performance. This paper presents a dimensionless approach to the study of the transport phenomena in the gas channels of planar anode-supported proton-conducting SOFC. Out-of-scale modeling reduces the number of variables that should be investigated and offers generalized results, giving insight into similar fuel cells. A 2D numerical model for the multiphysics process in SOFC is developed. A dimensionless form of the governing equations is derived in order to identify the dimensionless quantities that characterize the transport phenomena in SOFC. Reynolds, Peclet, and Sherwood are the important parameter groupings of flow channels that influence mass and temperature distribution. The efficacy of the computational fluid dynamic model is confirmed by comparing simulated results with experimental data from the literature. The effect of fuel and air channels’ dimensionless parameters on cell performance is discussed. Similar changes in fuel and air channels exert various influences on SOFC electrical performance. It is found that reducing Pe in the fuel channel improves power generation. However, Sh and Re reduction effect neutralize the increase in power generation due to Pe reduction in the air channel. •Non-dimensional formulation is used to predict anode-supported SOFC electrical power.•SOFC reacts differently to an identical change in air and fuel channels parameters.•Decreasing Peclet in gas channels increases the cell’s electrical current generation.
Bibliographie:ObjectType-Article-1
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content type line 14
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2021.122557