A sharp‐interface elliptic numerical model of laminar two‐phase gas‐liquid downward flow in a vertical parallel plate channel
Bibliographic record
Abstract
Abstract A sharp‐interface two‐phase numerical analysis is performed for co‐current downward laminar flow of a liquid film and a gas. A complete two‐phase model based on the two‐dimensional elliptic governing equations is presented. The numerical model implements a dynamically moving non‐orthogonal computational mesh that tracks the phase interface precisely. The capability of this new model is demonstrated by comparisons with two previous free surface falling film studies and one experiment. New results are presented on the effect of independent variation of the Reynolds and Froude numbers on the axial variation of the film free surface. Finally, the effects of the velocity of the gas phase on the liquid film development are examined for flow in a parallel‐plate channel. An analytical solution for the fully‐developed velocity profiles for the two‐phase flow is also presented.
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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".