A Fully Coupled Multiphysics Model for a H[sub 2]S SOFC
Bibliographic record
Abstract
Experimental results from solid oxide fuel cells (SOFCs) exhibit characteristics, e.g., an unusual dependence of cell performance on fuel composition and flow rate, which are poorly explained in current literature. In this paper, we demonstrate the importance of multiphysics modeling in understanding these results. We present a fully coupled two-dimensional multiphysics model that accounts for all transport processes and the chemical/electrochemical reactions in a working SOFC including dissociation kinetics in the fuel channels and heat transfer in the entire fuel cell assembly. A key aspect of the model developed in this work is the ability to model the coupled transport and reaction processes with thermodynamically consistent rate equations for the chemistry and electrochemistry. Simulation results from this comprehensive multiphysics model suggest that for the anode material used in our experiments, the electrochemically active species is and not . The model developed here allows the simulation of an SOFC with an anode that can electro-oxidize more than one fuel species, and we present results for the mixed open-circuit voltage from such a simulation.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".