An experimental investigation of vortex development on pitching low-aspect-ratio plates
Bibliographic record
Abstract
This thesis presents an experimental investigation into unsteady vortex development on pitching low-aspect-ratio plates. Simultaneous to force measurements, the three-dimensional Particle Tracking Velocimetry technique is used to characterize the suction-side ow eld. On an aspect-ratio-four rectangular plate, inboard-directed spanwise ow is induced by the tip vortex, while the tip-vortex formation process correlates with the angle of attack. As such, slow and fast pitch-up motions induce low and high levels of inboard-directed ow. This inboard-directed ow alters the leading-edge-vortex (LEV) dynamics, slowing LEV growth in the near-tip region while causing LEV compression near the symmetry plane. On lunate and truncate planforms, outboard-directed ow induced by spanwise leading-edge curvature, rather than vortex stretching, mitigates the arch-vortex that is observed to form on the rectangular planform. Additionally, the vortical wake formed by planforms that have identical spanwise leading-edge curvature, but otherwise di er in geometry, correlates strongly with a favourable lift-to-drag ratio on these planforms during the force-relaxation phase.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".