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Record W2317889797 · doi:10.2514/6.2013-380

Algorithmic Advanced for the Adaptive Non-Linear Frequency Domain Method.

2013· article· en· W2317889797 on OpenAlex
Ali Mosahebi Mohamadi, Sivakumaran Nadarajah

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.

Bibliographic record

Venue51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition · 2013
Typearticle
Languageen
FieldEngineering
TopicFluid Dynamics and Vibration Analysis
Canadian institutionsMcGill University
Fundersnot available
KeywordsComputer scienceFrequency domainAlgorithm

Abstract

fetched live from OpenAlex

An innovative implicit approach for the adaptive Nonlinear Frequency Domain method (adaptive NLFD) has been introduced for the Navier-Stokes equations on deformable grids. It has been shown that for a periodic ow problem, a huge reduction in the computational costs and a spectral temporal accuracy of the results could be achieved by solving the ow governing equations in the frequency instead of the time domain. This computational e ciency may be even further enhanced through an adaptive modal augmentation of the Fourier series representing the local ow solution. In the present study, to accelerate the convergence rate, an innovative modi ed nonlinear LU-SGS technique is proposed, where the modes are updated in a segregate fashion. The unique and important outcome of this implementation is that the computational e ciency of the solver does not decrease as the number of modes increases. Results are presented for the laminar vortex shedding behind a stationary cylinder, a stationary transonic airfoil, and a plunging airfoil and are compared with previous numerical results as well as experimental data.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesScience and technology studies
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.712
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0020.000
Scholarly communication0.0000.001
Open science0.0010.000
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 head0.015
GPT teacher head0.265
Teacher spread0.250 · 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