Conservative hyperbolic droplet solver for aircraft icing
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Bibliographic record
Abstract
View Video Presentation: https://doi.org/10.2514/6.2022-3369.vid This paper joins two different methods from the literature to obtain a second-order finite volume convective scheme for computing the Eulerian two-phase flows composed of air and small water droplets. The work examines the numerical solution for the various numerical instabilities as well as zero and negative values met in several numerical application cases from the literature for the water to air volume fraction. The numerical problems are due to the non-strictly hyperbolic nature of the Eulerian droplet equations along with the scheme used. A term similar to the particle pressure is proposed to modify the problem from a weakly to a strictly hyperbolic one. A modified Harten-Lax-van Leer-Contact convective scheme is used on the modified hyperbolic equations. Results with the new scheme are presented on 2D and 2.5D test problems as a verification. The proposed HLLC scheme improves on a classical upwind scheme for the single and three-element airfoil cases examined
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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) | 0.000 | 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 it