Numerical study of natural convection in an inclined enclosure: application to flat plate solar collectors
Bibliographic record
Abstract
In this paper, we present a numerical study of natural convection in an inclined enclosure.This was achieved in order to stimulate the convective heat exchanges that occur over the absorber of solar air flat plate collector.The considered model is an inclined enclosure with adiabatic side walls and aspect ratios 1 ≤ AR ≤ 12, and which contain heated air-filled (Pr=0.71).The inclination angle Ө of the enclosure was varied from 00° to 90° with Rayleigh numbers in the range of 10 3 ≤ Ra ≤ 10 6 .The influences of Ө and Ra on the flow patterns are investigated.The analysis is carried out by a numerical solution of the full governing equations; the resolution of the problem is based on the finite volumes method employing a staggered grid arrangement by the iteratively SIMPLE-C algorithm.The results indicate that there was a strong effect of inclination angle on the flow mode transition.
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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 | 0.001 |
| 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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 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".