On Low-Scalar Patches in Turbulent Wakes with and Without Free-Stream Turbulence
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Bibliographic record
Abstract
Abstract High-resolution, time-resolved, simultaneous particle image velocimetry and planar laser-induced fluorescence are performed to study the characteristics of the low-scalar ‘holes’ in a planar wake exposed to various cases of background turbulence as parameterized by the turbulence intensity and length scale. Several metrics are employed to distinguish the engulfed holes from those generated internally. It is found that beyond a transition distance of 18 Kolmogorov microscales from the wake boundary, holes exhibit comparable behaviour to the wake core, suggesting their generation by local turbulence. It is further revealed that engulfment constitutes less than 1% of the total mass flux in the far-field, regardless of the strength of incoming turbulence intensity.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.001 |
| 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 it