Investigation of the Turbulent Flow Behaviour in a Transpired Air Collector
Bibliographic record
Abstract
There is an increasing interest in developing renewable energy systems to address the increasing global energy demand and fight climate change. One emerging technology is the transpired air collector, which is a unique type of corrugated and perforated sheet metal installed in front of a building to absorb incident sunlight to preheat the building air intake. As the airflow behaviour in the channel influences the air heat gain, it is important to understand the fluid dynamics within the transpired air collector to maximize its efficiency. A full scale experimental setup using a commercial transpired air collector was built in a laboratory environment. Particle Image Velocimetry (PIV) was used to measure two-dimensional velocity fields at different air flow rates and at different locations inside the channel. PIV data were used to compute various turbulent characteristics of the air flow. It was found that the mean velocity peaks tended towards the flat construction wall side. The profiles of the Reynolds stress indicated a significant momentum transfer from the corrugation wall by the turbulent velocity field towards the bulk flow. Results demonstrate that the turbulence produced by the corrugation waveform dominates the entire channel.
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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 | 0.000 | 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".