DOWNSTREAM SIMILARITY OF THERMAL STRUCTURE IN PLUMES FROM JET DIFFUSION FLAMES IN A CROSSFLOW
Bibliographic record
Abstract
Plume cross sections of buoyant combustion products from jet diffusion flames in a crossflow were investigated experimentally. The objectives were to determine the forces leading to dynamic similarity in the plume behavior near the flame and to measure the cross-sectional shape in terms of these dynamic variables. Stack diameters from 16.7 to 102.3 mm and jet-to-crossflow velocity ratios from 0.0625 to 1.33 were investigated, which span a range of Reynolds number from 760 to 18600. The shape and size of 222 plumes were found to be dynamically similar to heated buoyant jets in a crossflow. This demonstrates that no fluid dynamic transition in plume behavior occurs over these conditions and that the dominant forces are the horizontal momentum flux of the crossflow and the buoyancy of the combustion products. A practical implication of this work is used to establish the validity of small-scale modeling of thermal plumes from flares in crossflows and provide a method to interpret the results of these models to the full scale.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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".