Experimental evaluation of fluid-to-fluid scaling models for deteriorated heat transfer at supercritical pressures (carbon dioxide and Refrigerant 134a)
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Bibliographic record
Abstract
Experimental evaluations of fluid-to-fluid scaling methods for deteriorated heat transfer (DHT) in upward vertical flows in tubes at supercritical pressures were performed at the University of Ottawa Supercritical Heat Transfer Loop (SCUOL), using Refrigerant R134a as a medium at conditions that were determined by scaling those in previous carbon dioxide tests in the same loop. Two scaling methods were considered: the Ottawa method, which was based on local scaling, and the Pisa method, which was based on global scaling. Both methods were partially successful in scaling the occurrence or absence of DHT, but only when allowing for the thresholds of DHT onset conditions to span some ranges rather than being sharply defined.
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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)
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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