Modelling of T-Junction Droplet Generator in the Transition Regime
Bibliographic record
Abstract
One of the most commonly used microfluidic droplet generator designs is the T-junction as shown in Figure 1. In this design, the dispersed phase microchannel, usually containing an aqueous solution, perpendicularly intersects the main channel, which contains the continuous phase (oil). The T-junction design has been widely adopted because of its simplicity and the superior control it offers over droplet size. Two primary operational regimes have been identified where breakup is dominated by confinement of the emerging droplet within the microchannel, known as the squeezing regime (Ca<0.002), or by the balance of shear and surface tension forces known as the dripping regime (Ca>0.02). The operational mode of the T-junction generator is primarily characterized by the Capillary number (Ca = μU / γ), which describes the competition between the aforementioned forces. In between the two regimes exists the transition regime where both confinement and shear forces are important.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.003 | 0.001 |
| Insufficient payload (model declined to judge) | 0.006 | 0.001 |
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".