Numerical Two-Phase Simulations of Alkaline Water Electrolyzers
Why this work is in the frame
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Bibliographic record
Abstract
This study presents a computational simulation of a zero-gap alkaline water electrolysis cell. The model employed is a three-dimensional, steady-state, non-isothermal, two-phase-flow computational fluid dynamics approach, which has been implemented by means of the OpenFOAM software library. This integration expands the capabilities of the existing libraries within the open-source framework, openFuelCell2, by introducing novel surface and volumetric coupling strategies to connect the dependent quantities over the existing interfaces and different regions. Additionally, the Nernst–Planck equation is incorporated into the two-phase Eulerian–Eulerian framework to describe the behavior of the liquid electrolyte within the cell.The model’s validation in this study is based on experimentally-determined polarization curves for various temperatures and volumetric flow rates. The results obtained show good agreement with the experimentally-acquired data. The implemented model has demonstrated its ability to accurately predict the transport of ions within the electrolyte and assess the influence of the generated gas phase on the local distribution of current density.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 it