CFD simulation of flashing jet applied to area classification
Bibliographic record
Abstract
Abstract Industrially flammable gases are stored and transported in the form of pressurized liquid. The occurrence of leaks from pressurized flammable liquids in vessels or pipes may cause a two‐phase release, containing a mixture of liquid droplets and vapour of flammable substances. This phenomenon, called flashing, occurs when a superheated liquid comes into a lower pressure environment. The study and understanding of this type of release are of fundamental importance for the hazardous area classification that is addressed by the IEC 60079‐10‐1 standard, which recommends the use of computational fluid dynamics (CFD) for the calculation of a hazardous area. This work uses CFD to predict the hazardous area extent and volume that resulted from the complex two‐phase release, which had not been addressed previously in other literature. The influence of wind and release conditions on the area classification is analyzed. The CFD results agree with the available experimental data. A new parameter as a function of the volume and extent of the jet is proposed for hazardous area classification.
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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".