Diagnostics of Density Fields in Hypersonic Flows around a Cone in a Light-Gas Gun by the Shadow Photometric Method
Bibliographic record
Abstract
A novel approach to obtaining hypersonic flows is proposed and the results of experimental study of hypersonic flows around cones with semivertex angles τ1 = 3° and τ2 = 12° and inflow Mach numbers M = 18 (τ1 = 3°) and 14.4 (τ2 = 12°) are presented. The use of a light-gas gun where a de Laval nozzle is mounted instead of an acceleration channel allows obtaining a hypersonic flow with a high value of optical density of the outflowing gas sufficient for visualization and diagnostics of the flow by optical methods. The flow pattern is visualized by the shadow method. Shadow images are registered using a high-speed Photron Fastcam camera with an exposure time of 1 μs and frame rate of 300 000 fps. The inflow Mach number is computed using the shadow images based on the angle of shock wave inclination.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".