A hybrid numerical scheme based on coupling discrete-velocities models for the BGK and LBGK equations

Vladimir V. Aristov, Oleg V. Ilyin, Oleg A. Rogozin

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    6 Citations (Scopus)

    Abstract

    A hybrid method based on coupling of the model kinetic (BGK) and lattice Boltzmann (LB) equations is considered. The computational domain in the physical space is decomposed into the non-equilibrium region, where the discrete-velocity (DV) method is employed, and the near-equilibrium one, where LB modeling are applied. The matching conditions on the boundary between these subdomains are derived from the Gauss-Hermite quadrature. Several LB models including high-order lattices are considered. The test problem solution shows good accuracy and efficiency of the proposed algorithm.

    Original languageEnglish
    Title of host publication31st International Symposium on Rarefied Gas Dynamics, RGD 2018
    EditorsDuncan Lockerby, David R. Emerson, Lei Wu, Yonghao Zhang
    PublisherAmerican Institute of Physics Inc.
    Volume2132
    ISBN (Electronic)9780735418745
    DOIs
    Publication statusPublished - 5 Aug 2019
    Event31st International Symposium on Rarefied Gas Dynamics, RGD 2018 - Glasgow, United Kingdom
    Duration: 23 Jul 201827 Jul 2018

    Publication series

    NameAIP Conference Proceedings
    Volume2132
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Conference

    Conference31st International Symposium on Rarefied Gas Dynamics, RGD 2018
    Country/TerritoryUnited Kingdom
    CityGlasgow
    Period23/07/1827/07/18

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