Wake flow dynamics of an A320 morphing wing prototype through Time-Resolved PIV and Hi-Fi simulations
Bibliographic record
Abstract
The present article investigates the electroactive morphing effects on the aerodynamic performance around an A320 wing prototype with an embedded system of near trailing edge piezoactuators able to vibrate and apply slight deformations at optimal frequencies and amplitudes. Physical experiments based on time-resolved PIV and Hi-Fi numerical simulations at Reynolds number of 1 million, incidence of 10° and Mach number of 0.06, corresponding to the low subsonic regime at take-off conditions, investigated the physical mechanisms related to the increase in lift, drag and noise source reduction, based on the modification of the turbulence structure along the shearing regions and its interaction with coherent structures in the near wake. A lift-to-drag increase in the order of 6% as well as a spectral energy reduction in the order of 15% in dB have been obtained for a specific range of the actuation frequency and for low vibration amplitude of 0.7 \uD835\uDC5A\uD835\uDC5A. The physical mechanisms related to these performances are analysed by spectral analysis and POD.
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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".