Structure functions in rotating Rayleigh–Bénard convection

R.P.J. Kunnen, H.J.H. Clercx, Bernardus J. Geurts

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    Abstract

    A combined numerical–experimental investigation on the scaling of velocity structure functions in turbulent rotating Rayleigh–B´enard convection is carried out. Direct numerical simulations in a cylindrical domain and a horizontally periodic domain are compared with experiments using a cylindrical tank in which stereoscopic particle image velocimetry is employed. The turbulent length scales that govern the scaling of the structure functions are evaluated directly in the numerical simulations. They provide a framework for the interpretation of the structure functions. The composition of the domain (cylinder/periodic) has a quantitative effect on the length scales even in the fluid bulk. At lower rotation rates an additional scaling range due to rotation is found. At higher rotation rates a direct transition is observed from dissipation-range scaling at small separations to an uncorrelated state at larger separations.
    Original languageUndefined
    Title of host publicationProceedings of the 13th European Turbulence Conference (ETC13)
    Place of PublicationBristol
    PublisherInstitute of Physics
    Pages082006
    Number of pages11
    DOIs
    Publication statusPublished - 2011
    Event13th European Turbulence Conference, ETC 2011 - Warsaw, Poland
    Duration: 12 Sep 201115 Sep 2011
    Conference number: 13

    Publication series

    NameJournal of Physics: Conference Series
    PublisherInstitute of Physics
    Number08
    Volume318
    ISSN (Print)1742-6588
    ISSN (Electronic)1742-6596

    Conference

    Conference13th European Turbulence Conference, ETC 2011
    Abbreviated titleETC13
    CountryPoland
    CityWarsaw
    Period12/09/1115/09/11

    Keywords

    • METIS-284975
    • EWI-21194
    • IR-79476

    Cite this

    Kunnen, R. P. J., Clercx, H. J. H., & Geurts, B. J. (2011). Structure functions in rotating Rayleigh–Bénard convection. In Proceedings of the 13th European Turbulence Conference (ETC13) (pp. 082006). (Journal of Physics: Conference Series; Vol. 318, No. 08). Bristol: Institute of Physics. https://doi.org/10.1088/1742-6596/318/8/082006