A solid oxide fuel cell (SOFC) contains complex materials that facilitate the energy conversion process. The diffusion media play an important role in facilitating the reactant gases to reach the electrochemical active regions. Porosity and tortuosity are crucial parameters describing the diffusion to be analyzed in a SOFC anode. This paper aims to evaluate the feasibility of using the A-asterisk algorithm to compute the geometric tortuosity within SOFC anodes. A three-dimensional structure, which is digitally created, represents the SOFC anode, in which the possible paths that follow the fluid flow are analyzed. A-asterisk algorithm is used to generate possible paths, and therefore the geometric tortuosity can be computed considering an averaged distance. A tortuosity-porosity correlation is proposed, and the results are compared with previous studies. Results show that the A-asterisk algorithm is a capable algorithm to evaluate the geometric tortuosity values in SOFC anodes with different particle size distribution and porosities.
|Title of host publication||17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021|
|Number of pages||7|
|Publication status||Published - 2021|
|Event||17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden|
Duration: 2021 Jul 18 → 2021 Jul 23
|Conference||17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021|
|Period||2021/07/18 → 2021/07/23|
Bibliographical noteFunding Information:
The authors kindly acknowledge the financial support from FIMCP-CERA-05-2017 project. Computational and physical resources provided by ESPOL are also very grateful. M. E-A thanks the financial support from "Decanato de Investigación" (ESPOL) for his research stay in Europe during the first semester of 2021.
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Subject classification (UKÄ)
- Energy Engineering