Passively Enhanced Natural Convection Heat Transfer via Swirl Effect
Bibliographic record
Abstract
A numerical and experimental study of the free convective heat transfer rate from a heated circular disk experiencing swirling flow has been carried out using ANSYS Fluent and a Mach Zehnder Interferometer (MZI).A horizontal, flat, isothermal disk has been subjected to radially swirling flow by the placement of stationary angled blades, or vanes, around the circumference of the disk.An examination of the flow pattern on a plane approximately normal to the primary flow revealed regions of downwash and upwash near the surface of the disk.The vortices in the secondary flow generated areas of increased and decreased surface heat flux corresponding to the regions of downwash and upwash, respectively.The RNG kepsilon turbulence model was used to obtain the disk's overall Nusselt number for 1.28x10 6 ≤ RaD ≤ 2.56x10 8 .The numerical model was used to compute and compare Nusselt numbers between vane designs of varying height, angle, length, thickness, and number.Preliminary vane design recommendations are made.Results show passive natural convection heat transfer enhancement of up to 35% via the swirl effect when compared to the model with no swirl.
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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 | 0.000 |
| 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 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 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".