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Experiments and reduced order modeling of symmetry breaking in Rayleigh-Taylor mixing

2023· article· en· W4388100398 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenuePhysical Review Fluids · 2023
Typearticle
Languageen
FieldEngineering
TopicCombustion and flame dynamics
Canadian institutionsUniversity of Calgary
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsRayleigh scatteringMixing (physics)Rayleigh–Taylor instabilityViscositySymmetry (geometry)Order (exchange)PhysicsSymmetry breakingViscous fingeringMechanicsOpticsThermodynamicsGeometryMathematicsMaterials scienceInstabilityQuantum mechanicsPorous medium

Abstract

fetched live from OpenAlex

We report the observation of asymmetrical fingering instabilities unfolding across an upward-moving dissolution interface while downward fingers also evolve. We tackled complexities characterized by large viscosity ratios (M) and Rayleigh (Ra) numbers - phenomena often challenging to replicate experimentally and simulate numerically. We present our Rayleigh-Taylor mixing experiments conducted at a substantial viscosity ratio (M$\ensuremath{\approx}5\ifmmode\times\else\texttimes\fi{}{10}^{5}$) and high Rayleigh numbers (Ra~${10}^{5}\ensuremath{-}3\ifmmode\times\else\texttimes\fi{}{10}^{6}$). Our experiments have confirmed the emergence of asymmetric growth in fingering instabilities along an upward-moving interface, accompanied by significant downward finger evolution.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.890
Threshold uncertainty score0.465

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.023
GPT teacher head0.300
Teacher spread0.277 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it