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Record W2257718785

초음속 유동 내 입자의 크기에 따른 속도 발달 및 유동과의 상호작용에 관한 수치해석적 연구

2009· article· ko· W2257718785 on OpenAlexaboutno aff
이민욱, 윤석구, 김호영

Bibliographic record

Venue대한기계학회 춘추학술대회 · 2009
Typearticle
Languageko
FieldEngineering
TopicAerosol Filtration and Electrostatic Precipitation
Canadian institutionsnot available
Fundersnot available
KeywordsMechanicsSupersonic speedTurbulenceNozzleShock (circulatory)Mach numberParticle (ecology)Jet (fluid)Flow (mathematics)PhysicsMaterials scienceOblique shockThermodynamicsGeology
DOInot available

Abstract

fetched live from OpenAlex

The method in which solid particles are accelerated through a supersonic gas flow via a de Laval convergent-divergent nozzle is known as cold-spray coating. In the current unsteady computation, particles of various sizes are stagnated inside the supersonic nitrogen gas to examine the effect of particle size on the shock interaction around the particle. A particle is hypothetically situated inside the supersonic flow in which distinctive discontinuity of shock characteristics is simulated and analyzed. Under given Nozzle Pressure Ratio of NPR=P o /P e =9.5, the exit Mach number is set to 2.2. The diameter of the titanium particle, circular in shape, is varied from 1, to 10, 50, and 100 ㎛. The results indicate that the smaller the particle, the easier it is to accelerate the particles because of their faster response or relaxation time. This trend is also consistent and verified with a steady computation. The flow downstream tends to pulsate due to fluctuations caused by the shockwave which leads to moderate turbulence in flow behind the shockwave.

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 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 categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.272
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0020.003

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 head0.008
GPT teacher head0.228
Teacher spread0.220 · 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; both teacher heads agree on what is shown here.

Study designNot applicable
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
Published2009
Admission routes1
Has abstractyes

Explore more

Same venue대한기계학회 춘추학술대회Same topicAerosol Filtration and Electrostatic PrecipitationFrench-language works237,207