Modeling turbulence in complex domains using explicit multi-scale forcing

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    Abstract

    A new computational framework for the numerical simulation of turbulent flows through complex domains and along irregular boundaries is presented. The geometrical complexity is included by introducing explicit fractal forcing. This involves the agitation of a spectrum of length-scales and forms an integral part of the flow modeling. The potential application of such a modeling approach is illustrated by the evaluation of the turbulent mixing of a passive scalar field, driven by this turbulent flow. The surface-area and wrinkling of level-sets of the scalar field are monitored showing the influence of the forcing localization on the mixing efficiency.
    Original languageEnglish
    Title of host publicationDirect and Large-Eddy Simulation VI
    EditorsEric Lamballais, Rainer Friedrich, Bernard J. Geurts, Olivier Métais
    Place of PublicationDordrecht
    PublisherSpringer
    Pages407-414
    Number of pages8
    ISBN (Electronic)978-1-4020-5152-4
    ISBN (Print)978-1-4020-4909-5
    DOIs
    Publication statusPublished - 2006
    Event6th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VI, DLES 2005 - University of Poitiers, Poitiers, France
    Duration: 12 Sep 200514 Sep 2005
    Conference number: 6

    Publication series

    NameERCOFTAC Series
    PublisherSpringer Verlag
    Volume10
    ISSN (Print)1382-4309
    ISSN (Electronic)2215-1826

    Conference

    Conference6th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VI, DLES 2005
    Abbreviated titleDLES
    CountryFrance
    CityPoitiers
    Period12/09/0514/09/05

    Keywords

    • Schmidt number
    • Complex domain
    • Passive scalar
    • Spectral space
    • Energy input rate

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  • Cite this

    Kuczaj, A. K., & Geurts, B. J. (2006). Modeling turbulence in complex domains using explicit multi-scale forcing. In E. Lamballais, R. Friedrich, B. J. Geurts, & O. Métais (Eds.), Direct and Large-Eddy Simulation VI (pp. 407-414). (ERCOFTAC Series; Vol. 10). Dordrecht: Springer. https://doi.org/10.1007/978-1-4020-5152-2_47