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Record W1955631273

The sound that vortices within vortices make

2007· article· en· W1955631273 on OpenAlexaffvenue
Georgios H. Vatistas

Bibliographic record

VenueCanadian acoustics · 2007
Typearticle
Languageen
FieldEngineering
TopicFluid Dynamics and Turbulent Flows
Canadian institutionsConcordia University
Fundersnot available
KeywordsVortexEddyMechanicsCentrifugal forcePhysicsRotation (mathematics)Kelvin waveFree surfaceTourbillonContainer (type theory)Classical mechanicsFlow (mathematics)MeteorologyEngineeringGeometryTurbulence
DOInot available

Abstract

fetched live from OpenAlex

Some of the new developments made in vortex dynamics that are relevant to the sound produced by intense concentrated eddies are discussed. Most of the contributions consider vortices of the zero-circulation Taylor's type. Waves on the free surface of a liquid vortex produced in an apparatus exhibit fundamental characteristics of Kelvin's equilibrium patterns. The rotary motion imparted to the fluid by the disk, generates a centrifugal force field, which pushes the liquid towards the container's wall. The source of the waves appearing on the liquid interface has been attributed to the presence of revolving satellite vortices, which give the event a dual wave/vortex nature. The solitary wave in rotation experiments are also conducted in a transparent cylindrical reservoir having a circular outlet, fixed on the bottom plate. The height of the single interfacial wave increases if a jolt is applied to the container along the lateral direction prior to the wave development.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.002
Threshold uncertainty score0.008

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.000
Science and technology studies0.0010.001
Scholarly communication0.0020.001
Open science0.0000.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0020.000

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 head0.009
GPT teacher head0.199
Teacher spread0.189 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2007
Admission routes2
Has abstractyes

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