The Effects of Zone Volume and Gravity on Thermo-Solutal Marangoni Convection Instability in a Half-Zone Model of Float-Zone Growth of SiGe
Bibliographic record
Abstract
A series of three-dimensional numerical simulations have been carried out to examine the onset and characteristics of thermo-solutal Marangoni convection in the floating liquid bridge of SiGe (Pr=6.37×10−3 and Sc=14.0). To this end, a simple half-zone model is considered, and the free surface deformation is taken into account. Simulation results carried out under normal (1-g) and zero gravity show that the computed temperature field in the melt is almost independent of this convective flow, and the concentration field determines the characteristics of the transport structures developing in the melt. The critical conditions for three volume ratios under normal and zero gravity conditions are determined. The thresholds in the liquid bridge depend on the volume ratio, and gravity has a negligible effect on the flow transition in the present calculation regime. The critical azimuthal wave number can shift to higher values at the higher volume ratio or to lower values at the low volume ratio. The random-periodic pattern was observed only at the high-volume ratio for the thermal-solutal Marangoni convection.
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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 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 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".