Numerical Study Of Transverse Pitch Effect On Pressure Loss In An Inline Array Of Elliptical Pins
Bibliographic record
Abstract
The internal geometrical parameters of the pin-fin arrays have a significant influence on its performance.This paper presents a three-dimensional numerical analysis of pin-fin arrays where only a small part of the channel is modelled by applying cyclic boundary conditions.The simulations are performed using the computational fluid dynamics software OpenFOAM v10.The results are validated against real experimental data and previous two-dimensional study.Furthermore, in order to address the lack of consistent research data on the influence of the pin spacing, this study aims to systematically model and investigate the hydraulic performance of pin-fin array by changing the transverse pitch slightly while keeping the longitudinal pitch, the diameter of the pins, and the height of the channel unchanged.For an inline layout of elliptical pin-fins, it was found that the optimum ratio between the transverse spacing and the width of the pins should be between 1 and 1.5.
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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".