Statistical Properties of Pressure Loadings and Vibroacoustic Response of a Simplified Side Glass Induced by the Flow over Generic Flow-deflector and Side-mirror
Bibliographic record
Abstract
The statistical description of the wall pressure fluctuations in a non-equilibrium turbulent boundary layer (TBL) on a plate with two typical bluff bodies a side mirror and a flat fence is presented. To achieve statistically converged turbulent flow, a long time history computational fluid dynamics (CFD) simulation was conducted with the Lattice-Boltzmann solver PowerFLOW. It provided the unsteady wall pressure on the plate. Mean flow, wall pressure spectra and two point correlations of the wall-pressure results are validated for both cases with experiments run in the anechoic wind tunnel at Purdue University. From a spatial temporal analysis of the turbulent flow the convection and acoustic zones are captured correctly, which are major sources of excitation and transmission respectively. Using the CFD wall-pressure coherence on the plate, zonal Corcos’ model parameters like convection velocity and decay coefficients have been determined by least-square curve fitting. The identified empirical model parameters are validated with experimental values and later used to predict the vibroacoustic indicators for the plate. Vibroacoustic indicators for a side mirror case are calculated using both CFD-derived parameters and finite element method. These results are validated with experiments on a plate-cavity system.
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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".