Symmetry-preserving discretization for DNS

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    Abstract

    This paper describes a numerical method for solving the (incompressible) Navier-Stokes equations that is based on the idea that the motivation for discretizing differential operators should be to mimic their fundamental conservation and dissipation properties. Therefore, the symmetry of the underlying differential operators is preserved. The resulting discretization is stable on any grid. Its accuracy is tested for a turbulent channel flow at Re-tau =180 by comparing the results to those of physical experiments and previous numerical studies. The method is generalized to compute flows in domains with arbitrarily-shaped boundaries, where the boundary is represented using the Cartesian grid approach. To that end, a novel cut-cell discretization has been developed. The boundary treatment is successfully tested for flow around a circular cylinder.

    Original languageEnglish
    Title of host publicationDirect and Large-Eddy Simulation V, Proceedings
    EditorsR Friedrich, BJ Geurts, O Metais
    Place of PublicationDORDRECHT
    PublisherSpringer
    Pages135-146
    Number of pages12
    ISBN (Electronic)9781402023132
    ISBN (Print)9789048165759
    Publication statusPublished - 2004
    Event5th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation - , Germany
    Duration: 27-Aug-200329-Aug-2003

    Publication series

    NameERCOFTAC SERIES (EUROPEAN RESEARCH COMMUNITY ON FLOW, TURBULENCE AND COMBUSTION)
    PublisherSPRINGER
    Volume9

    Other

    Other5th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation
    Country/TerritoryGermany
    Period27/08/200329/08/2003

    Keywords

    • finite-volume discretization
    • conservation
    • stability
    • Navier-Stokes equations
    • turbulence
    • channel flow
    • Cartesian grid method
    • flow past circular cylinder
    • FINITE-DIFFERENCE SCHEMES
    • NONUNIFORM MESHES
    • REYNOLDS-NUMBER
    • CHANNEL FLOW
    • TURBULENCE

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