On the Use of High-Aspect-Ratio Film Cooling Scheme
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Bibliographic record
Abstract
Current film-cooling hole-geometry research is attempting to clarify the mechanism of film cooling effectiveness and its relation to the counter-rotating vortex pair (CRVP), in this paper a mechanism of film cooling heat transfer has been proposed. The coolant expansion in this mechanism is likely to improve film cooling effectiveness. It was characterized by developing a high aspect ratio (AR), hence named high-aspect-ratio (HAR) scheme. Typical AR values investigated experimentally and numerically in this work were 17.5 and 35. The transient thermochromic liquid crystal technique and the steady Reynolds-Averaged Navier-Stokes simulation with realizable κ-epsilon turbulence model were used. The results were assessed against available data hence demonstrating the high performance of the new scheme. The film cooling effectiveness of the full expansion cases is close to 1, achieved the so call “ideal” performance. Meanwhile, CRVP was still very strong, demonstrating that the CRVP did not result in decaying performance in the new scheme. Consequently, the HAR scheme achieved successfully the high performance of the proposed film cooling heat transfer mechanism.
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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