Deposition Of A Circular Liquid Jet On A Moving Wall
Bibliographic record
Abstract
A free surface liquid jet impinging on a moving wall is relevant to many industrial applications including surface coating, cooling and cleaning. Depending on the flow variables, the impingement can be steady (deposition in the form of a thin film or capillary thread) or unsteady (splash or spreading into hydraulic jumps). This study focuses on the steady regime where a Newtonian liquid jet impinges on a moving wall and then spreads into a U-shaped lamella. We particularly focus on the parameter space of jet Reynolds number (Rej) from 50 to 1200 and wall-to-jet velocity ratio (Uw/Vj) from 0.6 to 6. Boundary layer theory is utilized to analyze the spreading characteristics of the lamella. The non-dimensional lamella heel length, Lh/d (d is the jet diameter), and lamella width Lw/d, are solely functions of Rej and Uw/Vj. Our theory predicts that Lh/d and Lw/d scale with Rej 1/3 . With further insight provided by numerical simulations, we found that (Lh/d, Lw/d) roughly scales with (Uw/Vj) 1/2 . These scaling relationships are verified against experiments.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".