Direct numerical simulation of self-noise of an installed control-diffusion airfoil
Bibliographic record
Abstract
A study investigating the compressible flow around a controlled diffusion (CD) airfoil in a full anechoic open-jet facility is presented. The trailing edge noise sources of the CD airfoil and their propagation in the anechoic wind tunnel are simulated in a single step for the first time, using the Lattice Boltzmann Method (LBM) implemented in the PowerFlow solver. The LBM solves the time and space evolution of a discrete particle distribution function on a lattice grid. The method is naturally transient and compressible, and has been successfully applied to aero-acoustics problems at similar Reynolds number. Close to the reattachment point a turbulent boundary layer develops. When the curvature changes, the adverse pressure gradient leads to an increase of the boundary layer thickness. The non compacity of the source can be seen by the cardioid radiation pattern in the anechoic room.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".