Shear Layer Instabilities In A Counter-Flowing Wall Jet
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Bibliographic record
Abstract
Counter-flowing wall jets are often used in heat transfer and combustion applications. While several experimental and numerical studies have been conducted to evaluate the characteristics of counter-flowing wall jets, their internal turbulence structure is not well understood. This paper presents the results of a three-dimensional, unsteady, Improved Delayed Detached Eddy Simulation conducted on a counter-flowing wall jet. The mean flow features captured by the simulation are presented with relevant discussions. The shear layer instabilities caused by the vortical structures in the recirculation zone are analyzed by examining the instantaneous flow field. The flow mechanism that causes the fluctuations in the penetration length is also evaluated. The results depict the complexity of the turbulence structure in a counter-flowing wall jet.
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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 | 0.000 |
| 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 it