DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jun, Eunji | ko |
dc.date.accessioned | 2021-02-17T08:50:07Z | - |
dc.date.available | 2021-02-17T08:50:07Z | - |
dc.date.created | 2021-02-17 | - |
dc.date.created | 2021-02-17 | - |
dc.date.issued | 2019-01 | - |
dc.identifier.citation | VACUUM, v.159, pp.125 - 133 | - |
dc.identifier.issn | 0042-207X | - |
dc.identifier.uri | http://hdl.handle.net/10203/280827 | - |
dc.description.abstract | Fokker-Planck kinetic models have been devised as an approximation of the Boltzmann collision operator. Cubic Fokker-Planck-DSMC hybrid method is employed to simulate the diatomic gas flow through a thin slit and a thin orifice. Pressure driven nitrogen expansion gas flows with two different pressure ratios are investigated at Knudsen number 0.001. The DSMC method is physically accurate for all flow regime; however it is computationally expensive in high density or near continuum regions. The Fokker-Planck-DSMC hybrid scheme employs DSMC in rarefied regions and Fokker-Planck method in near continuum flow regions for an efficient and accurate solution. Numerical procedures of the cubic Fokker-Planck method are implemented within the framework of an existing DSMC-solver, SPARTA. The Fokker-Planck-DSMC hybrid solution reproduces pure DSMC solution with improved computational efficiency up to a factor of five for vacuum flow through a thin orifice. In addition, breakdown of translational equilibrium is investigated. Domain criterion of FP-DSMC is safely smaller than Bird's breakdown criterion. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Cubic Fokker-Planck-DSMC hybrid method for diatomic rarefied gas flow through a slit and an orifice | - |
dc.type | Article | - |
dc.identifier.wosid | 000454964400015 | - |
dc.identifier.scopusid | 2-s2.0-85055033965 | - |
dc.type.rims | ART | - |
dc.citation.volume | 159 | - |
dc.citation.beginningpage | 125 | - |
dc.citation.endingpage | 133 | - |
dc.citation.publicationname | VACUUM | - |
dc.identifier.doi | 10.1016/j.vacuum.2018.10.028 | - |
dc.contributor.localauthor | Jun, Eunji | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Rarefied gas dynamics | - |
dc.subject.keywordAuthor | Vacuum flows | - |
dc.subject.keywordAuthor | DSMC | - |
dc.subject.keywordAuthor | Diatomic gas flow | - |
dc.subject.keywordAuthor | Fokker-Planck-DSMC hybrid | - |
dc.subject.keywordAuthor | SPARTA | - |
dc.subject.keywordPlus | SIMULATION | - |
dc.subject.keywordPlus | ALGORITHM | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.