New Viscous Fingering Mechanisms at High Viscosity Ratio and Peclet Number Miscible Displacements
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Bibliographic record
Abstract
Full nonlinear simulation of the viscous fingering instability of miscible flow displacements in a rectilinear Hele-Shaw cell are conducted using a hybrid numerical algorithm. The algorithm allowed the modeling of the flow at relatively high values of the mobility ratio and Peclet number, representing the ratio of convective and dispersive forces. New finger structures, some reminiscent of fractal patterns observed in previous experimental studies, are reported. An explanation of the mechanisms responsible for the new finger structures is presented based on the development of the flow velocity field. The flow is also characterized qualitatively through a spectral analysis of the average concentration and an analysis of the variations of the relative finger width and relative contact area. General observations regarding the conditions for the development of complex finger structures are presented.
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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) | 0.001 | 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 it