Effects of Feeding Pressures on the Flowfield Structures of Supersonic Film Cooling
Bibliographic record
Abstract
Schlieren and shadowgraph visualizations of flowfields in a typical configuration of supersonic film cooling in a backward-facing slot were conducted in a Mach 2.95 continuous-suction wind tunnel, with the film gas tangentially ejected through a half-Laval nozzle of Mach 1.5. The flowfields after the step without and with the injection of film coolant were measured in the paper, including the coolant delivery pressures in the matched and unmatched conditions with the mainstream, respectively. The effects of the different injecting pressures of film coolant on the flowfields in these conditions were also analyzed. A clear visual image of the flowfields of supersonic film cooling in a backward-facing step was obtained, and the characteristics of the flowfields near the step were described. The results confirmed that the feeding pressure of film gas affected the flowfields after the step, especially the shock wave emanating from the upper tip of the lip and the shock wave and expansion fan from the lower tip of the lip. This work aided the verification of numerical simulation results and the in-depth understanding of the flowfields of supersonic film cooling near the backward-facing step.
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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".