SCALE INTERACTION IN A MIXING LAYER. THE ROLE OF THE LARGE-SCALE GRADIENTS

Daniele Fiscaletti, Antonio Attili, Fabrizio Bisetti, Gerrit E. Elsinga

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The interaction between scales is investigated in a turbulent mixing layer. The large-scale amplitude modulation of the small scales already observed in other works depends on the crosswise location. Large-scale positive fluctuations correlate with a stronger activity of the small scales on the low speed-side of the mixing layer, and a reduced activity on the high speed-side. However, from physical considerations we would expect the scales to interact in a qualitatively similar way within the flow and across different turbulent flows. Therefore, instead of the large-scale fluctuations, the large-scale gradients modulation of the small scales has been additionally investigated.
    Original languageEnglish (US)
    Title of host publication15th European Turbulence Conference 2015
    StatePublished - Aug 23 2015

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