Balancing errors in LES

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    Abstract

    Errors in LES are easily made and hard to control. We identify the main local sources of error involved in LES. The non-commutation terms arising in complex flows when using nonuniform filter-widths are analysed in some detail. The magnitudes of discretisation and modelling errors arising in a turbulent mixing layer are determined and their interaction is shown to lead to partial cancellation of errors for various spatial discretisation methods.
    Original languageEnglish
    Title of host publicationDirect and Large-Eddy Simulation III
    Subtitle of host publicationProceedings of the Isaac Newton Institute Symposium / ERCOFTAC Workshop held in Cambridge, U.K., 12–14 May 1999
    EditorsPeter R. Voke, Neil D. Sandham, Leonhard Kleiser
    Place of PublicationDordrecht
    PublisherKluwer Academic Publishers
    Pages1-12
    ISBN (Electronic)978-94-015-9285-7
    ISBN (Print)978-90-481-5327-5
    DOIs
    Publication statusPublished - 20 Jan 1999
    Event3rd ERCOFTAC Workshop on Direct and Large-Eddy Simulation III, DLES 1999 - U.K. Royal Academy of Engineering, Cambridge, United Kingdom
    Duration: 12 May 199914 May 1999
    Conference number: 3

    Publication series

    NameERCOFTAC Series
    PublisherKluwer Academic
    Volume7
    ISSN (Print)1382-4309

    Conference

    Conference3rd ERCOFTAC Workshop on Direct and Large-Eddy Simulation III, DLES 1999
    Abbreviated titleDLES
    CountryUnited Kingdom
    CityCambridge
    Period12/05/9914/05/99

    Keywords

    • Large eddy simulation
    • Direct numerical simulation
    • Discretisation errors
    • Dynamic inverse modelling
    • Convolution filter

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