Flow recovery in the wake of a suspended flat plate
Bibliographic record
Abstract
The flow field behind a flat plate suspended in an open channel is investigated using LDV. The formation of a gap between the plate and channel bed produces a flow that is different from the flow around a wall-mounted bluff body. The gap can be perceived as an end condition of the plate that suppresses the formation of the horseshoe vortex and modifies the interaction between the plate and the wall bounded flow. As the flow plunges under the plate through the gap, a wall jet is formed. As the wall jet grows and interacts with the wake-like flow, the effect of the wall jet diminishes with increasing distance downstream of the plate, beyond which the turbulent flow in the wake may be considered to be quasi-two-dimensional. Flow recovery is examined in terms of the mean velocity, turbulence intensity and quadrant decomposition. The present results indicate that the near-wall region of the mean flow recovers faster than the outer region. The turbulent intensities showed a similar tendency. The Reynolds shear stress distributions indicated full recovery while turbulence intensities did not recover completely, especially in the outer regions of the flow. However, a quadrant analysis reveals that at the last measuring station and away from the wall region, the flow is still being influenced by the disturbance generated in the wake region.
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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".