Natural Rayleigh Benard Convection Of Bingham Fluid In Enclosure Cavity With Sinusoidal Profiles
Bibliographic record
Abstract
In this study, two-dimensional steady-state simulations of laminar natural convection of Rayleigh Benard in square enclosure were performed.The enclosure is considered to be completely filled with a yield stress fluid obeying viscoplastic model Bingham.The vertical lateral walls are thermally isolated, whereas sinusoidal temperature distributions with different amplitudes and phases are imposed over the horizontal walls.Fluid flow and heat transfer characteristics are systematically studied over a wide range of Phase deviation ϕ (0-π) and amplitude ration Ɛ (0-1).We have fixed the Rayleigh number (Ra = 10 5 ), Prandtl number (Pr = 7), and finally the Bingham number (Bn = 0.5).The Navier-Stokes equations, the mass and energy conservation equations, are solved numerically using CFD software FLUENT 15.The results shows that the Nusselt number decreases with the increase of the Bingham number, and for the large values of the latter the heat transfer is done by conduction.It is also noteworthy that the increase in the phase difference and the amplitude ratio leads to the increase in the heat transfer.
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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".