Numerical Investigation of Oscillating Flows with Nonequilibrium Condensation in Nozzles
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Bibliographic record
Abstract
Numerical investigation of oscillations in nonequilibrium two-phase flows with a model for homogeneous nucleation in Laval nozzles is presented. The model, implemented within an Eulerian–Eulerian reference frame, is formulated using classical nucleation theory. Results by two-dimensional and three-dimensional methods are presented and compared, showing the accuracy of the predicted frequency and the pressure amplitude by a two-dimensional method. Emphasis is placed on oscillating flows in a variety of nozzle geometries, covering a range of inlet conditions. Dependences of frequency on inlet stagnation subcooling demonstrate that the occurrence of the asymmetric mode for pure steam flow is not exclusive to a specific nozzle geometry and inlet condition, which could be deferred by increasing the expansion rate and decreasing the inlet pressure.
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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 it