Bibliographic record
Abstract
The air ring design directly affects the aerodynamic phenomena in the film blowing process. In this study, the effects of impinging jets on heat transfer are explored taking into account the influence of cooling on the bubble shape, by comparing the characteristics and performance of flows produced by single and dual orifice air rings. The aerodynamic characteristics of air-cooling flow around the bubble surface are investigated utilizing a finite volume numerical method and renormalization group (RNG) theory based on the k—ε turbulence model coupled with enhanced wall treatment method of the FLUENT commercially available software. The numerical analysis provided a detailed description of fluid flow pattern as well as heat transfer coefficients for different air ring designs, and under different processing conditions. The results of calculation indicate that the heat transfer rate critically depends on the air ring design. A simple correlation for the heat transfer coefficient and the maximum air velocity function (i.e., h = aV b max proposed in the literature) was established. The boundary conditions dominated by airflow rates are equally important for cooling efficiency. The correlation between Reynolds number and the heat transfer in the numerical solution is also reported.
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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 | 0.001 | 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".