Comparative study for rarefied gas flow into vacuum through a short circular pipe

The problem of rarefied gas flow into vacuum through a short circular pipe is studied numerically by solving the Boltzmann kinetic equation. Comparison of the results obtained with the exact and S-model collision integrals is presented across a large range of Knudsen numbers. Computed values of mass...

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Bibliographic Details
Published inVacuum Vol. 103; pp. 5 - 8
Main Authors Aristov, V.V., Shakhov, E.M., Titarev, V.A., Zabelok, S.A.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.05.2014
Subjects
BKE
Circular pipe
Circularity
Computational physics
Computer simulation
Gas flow
Integrals
Kinetic equations
Mass flow rate
Mathematical models
Monte Carlo methods
Pipe
Rarefied gas
S-model
Vacuum
Kinetic equations
Vacuum
Circular pipe
Computational physics
S-model
BKE
Rarefied gas
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Summary:The problem of rarefied gas flow into vacuum through a short circular pipe is studied numerically by solving the Boltzmann kinetic equation. Comparison of the results obtained with the exact and S-model collision integrals is presented across a large range of Knudsen numbers. Computed values of mass flow rate are also compared against the DSMC results and experimental data from existing literature. •Rarefied gas flow into vacuum through a short circular pipe is studied.•Boltzmann kinetic equation with exact and S-model collision integrals is solved.•Two different methods and codes are used.•The solution is computed for a broad range of Knudsen numbers.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0042-207X
1879-2715
DOI:10.1016/j.vacuum.2013.11.003