CFD (Realizable K-ε) and Cold-Flow Testing for the Design of Air-Air Ejectors With Triangular Tabbed Driving Nozzles
Bibliographic record
Abstract
This paper describes an investigation in which a commercial CFD software package has been used to evaluate the performance of air-air ejectors with triangular tabbed driving nozzles. The Realizable k-ε turbulence model was employed and CFD predictions were evaluated against experimental results. Ejector performance was measured on the basis of pumping, mixing, and back-pressure. It was discovered that CFD models were generally capable of predicting trends in pumping and mixing, but were unable to account for appropriate magnitude. In addition, CFD did not accurately represent the strength of the streamwise vortices generated by the tabs. At increased tab angles, CFD predicted values of back-pressure very well. However, under the 90° tab configuration, back-pressure was severely under-predicted.
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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 | 0.000 | 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 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".