Tip Vortex Control via a Tab Deflecting at Higher Harmonic Frequencies
Bibliographic record
Abstract
The impact of a trailing-edge tab, actuated at different start times and higher harmonic frequencies, on the size and strength and the position of a tip vortex generated by an oscillating NACA 0015 wing was investigated. The results show that for all the tab control cases tested, the peak tangential velocity of the tip vortex was found to be a weak function of the tab motion, whereas the core radius and circulation were strongly dependent upon the tab deflection. The 2/revolutions higher harmonic tab control actuated during pitch up produced the largest reduction in the peak tangential velocity and the greatest increase in the core radius and also provided the most promising blade-vortex-interaction suppression. Similar control effectiveness was also observed for 3/revolutions higher harmonic tab control motion but to a lesser extent. The 4/revolutions higher harmonic tab control was, however, most effective during the pitch-down flow-reattachment process.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".