A CFD Analysis of Energy Separation of Rectangular Shape Cold Orifice Vortex Tube
Bibliographic record
Abstract
The present work investigates the influence of cold orifice shape on the thermal performance of vortex tube (VT).Two 3D (three-dimensional) geometries were created i.e., circular and rectangular shapes of cold orifice vortex tubes with four number of nozzles.The two geometries of the vortex tube had the same area and other dimensions for comparison.The operating inlet pressure was 4 bar for both shapes with air as a working fluid.The turbulence model used to predict the temperature magnitude was the standard k- turbulence model.The present work illustrated the flow physics of temperature separation in a rectangular-shaped cold orifice for different cold mass fractions.Furthermore, the study also discussed fluid parameters like axial velocity and tangential velocity for different radial locations inside the tube to understand the flow mechanism.A novel attempt to determine the feasible flow physics of a rectangular shape cold orifice vortex tube.The circular and rectangular shape cold orifice vortex tube was compared based on various fluid characteristics and temperature separation magnitude.It was found that energy separation is elevated in the hot region for rectangular shape cold orifice i.e. 28.7 o C at a cold mass fraction of 0.9.In contrast, the maximum cold energy separation magnitude in the cold region is achieved by the circular shape cold orifice vortex tube which is 18.8 o C.
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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 | 0.001 |
| 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".