Three-Dimensional Turbulent Wall Jets Issuing from Moderate-Aspect-Ratio Rectangular Channels
Why this work is in the frame
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Bibliographic record
Abstract
The development of three-dimensional turbulent wall jets emanating from long channels with outlet cross-sectional aspect ratios from 1 to 8 was investigated by measuring the mean and turbulent flowfields using hot-wire anemometry. The turbulent velocity profiles indicate that the core of the jet behaves like a two-dimensional wall jet before the interaction of the lateral shear layers. Contours of the full flowfield indicate that the turbulent mechanism that causes the lateral growth of the three-dimensional wall jets is located in the lateral shear layers near the wall. Increasing the outlet aspect ratio separates the lateral shear layers, causing a wider core region of two-dimensional wall-jet development that, in turn, delays the onset of far-field three-dimensional wall-jet development. The development of the different aspect-ratio wall jets collapsed onto a single curve when the streamwise coordinate was normalized by the square root of the channel cross-sectional area and the vertical and lateral jet half-widths were normalized by the height and width of the channel, respectively.
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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 | 0.001 |
| 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 it