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    Simulations of Micro Gas Flows by the DS-BGK Method

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    Type
    Conference Paper
    Authors
    Li, Jun
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Date
    2012-05-11
    Online Publication Date
    2012-05-11
    Print Publication Date
    2011-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/594117
    
    Metadata
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    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.
    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
    ISBN
    9780791844632
    DOI
    10.1115/icnmm2011-58010
    ae974a485f413a2113503eed53cd6c53
    10.1115/icnmm2011-58010
    Scopus Count
    Collections
    Conference Papers; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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