Exploring Vortex Stability on Two-Dimensional Rotating Plates with Varying Sweepback
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Bibliographic record
Abstract
A method for predicting the relative stability of leading-edge vortices (LEVs) on flapping profiles is proposed and validated experimentally with time-resolved Particle Image Velocimetry and three-dimensional Particle Tracking Velocimetry. LEV stability is predicted by estimating the growth of an LEV from the relative strength of vorticity feeding, vorticity convection, and vortex stretching for a given limiting vortex size. The proposed method accurately predicts relative LEV stability. In particular, more stable LEVs are observed at higher reduced frequencies, which represent the ratio between the limiting vortex size and the rate of vorticity feeding. The introduction of profile sweep increased both LEV stability and spanwise vorticity transport. It is thought that spanwise vorticity transport improved LEV stability by acting as a sink for vorticity generated in the leading-edge shear layer.
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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