Simulations of Micro Gas Flows by the DS-BGK Method

Handle URI:
http://hdl.handle.net/10754/594117
Title:
Simulations of Micro Gas Flows by the DS-BGK Method
Authors:
Li, Jun
Abstract:
For gas flows in micro devices, the molecular mean free path is of the same order as the characteristic scale making the Navier-Stokes equation invalid. Recently, some micro gas flows are simulated by the DS-BGK method, which is convergent to the BGK equation and very efficient for low-velocity cases. As the molecular reflection on the boundary is the dominant effect compared to the intermolecular collisions in micro gas flows, the more realistic boundary condition, namely the CLL reflection model, is employed in the DS-BGK simulation and the influence of the accommodation coefficients used in the molecular reflection model on the results are discussed. The simulation results are verified by comparison with those of the DSMC method as criteria. Copyright © 2011 by ASME.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Li J (2011) Simulations of Micro Gas Flows by the DS-BGK Method. ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1. Available: http://dx.doi.org/10.1115/icnmm2011-58010.
Publisher:
ASME International
Journal:
ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1
Conference/Event name:
ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011
Issue Date:
2011
DOI:
10.1115/icnmm2011-58010
Type:
Conference Paper
ISBN:
9780791844632
Appears in Collections:
Conference Papers; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLi, Junen
dc.date.accessioned2016-01-19T13:22:00Zen
dc.date.available2016-01-19T13:22:00Zen
dc.date.issued2011en
dc.identifier.citationLi J (2011) Simulations of Micro Gas Flows by the DS-BGK Method. ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1. Available: http://dx.doi.org/10.1115/icnmm2011-58010.en
dc.identifier.isbn9780791844632en
dc.identifier.doi10.1115/icnmm2011-58010en
dc.identifier.urihttp://hdl.handle.net/10754/594117en
dc.description.abstractFor gas flows in micro devices, the molecular mean free path is of the same order as the characteristic scale making the Navier-Stokes equation invalid. Recently, some micro gas flows are simulated by the DS-BGK method, which is convergent to the BGK equation and very efficient for low-velocity cases. As the molecular reflection on the boundary is the dominant effect compared to the intermolecular collisions in micro gas flows, the more realistic boundary condition, namely the CLL reflection model, is employed in the DS-BGK simulation and the influence of the accommodation coefficients used in the molecular reflection model on the results are discussed. The simulation results are verified by comparison with those of the DSMC method as criteria. Copyright © 2011 by ASME.en
dc.publisherASME Internationalen
dc.titleSimulations of Micro Gas Flows by the DS-BGK Methoden
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1en
dc.conference.date19 June 2011 through 22 June 2011en
dc.conference.nameASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011en
dc.conference.locationEdmonton, ABen
dc.contributor.institutionDepartment of Thermal Engineering, Tsinghua University, Beijing, 100084, Chinaen
kaust.authorLi, Junen
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