Validation and Verification of pimpleCentralFOAM and a 1D-ERAM Solver for Analysis of an Ejector-Ramjet
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Bibliographic record
Abstract
View Video Presentation: https://doi.org/10.2514/6.2022-3347.vid Verification and validation of computational fluid dynamics (CFD) and a quasi 1D ejector-ramjet (ERAM) solver are presented for the analysis of an ejector-ramjet. A custom OpenFOAM computational fluid dynamics solver, pimpleCentralFOAM, with extended capabilities is shown to be able to capture flow discontinuities and entrainment in a confined jet. A quasi 1D-ERAM solver was developed that utilizes a pressure-based coupled methodology to solve the steady-state mass and momentum conservation equations and is capable of modeling flows with two differing gases. The 1D-ERAM solver was found to agree well with experiments and CFD predictions of entrainment for a confined jet.
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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 | 0.000 |
| 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) | 0.000 | 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 it