Pair Dispersion in Turbulence

ORAL

Abstract

We report measurements of relative dispersion in a high Reynolds number water flow using 3D optical particle tracking. We find excellent agreement with Batchelor's theorertical predictions, and do not see a fully developed Richardson law. Our results indicate that the initial separation of particle pairs is an important parameter for calculating dispersion in any flow of industrial or biological significance. This work is supported by the NSF and by the Max Planck Society.

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Authors

  • Eberhard Bodenschatz

    Max Planck Institute for Dynamics and Self-Organization, Max Planck Institute for Dynamics and Self-Organisation, Goettingen, Germany, Max Planck Institute for Dynamics and Self-Organization, Goettingen, Germany

  • Michael Bourgoin

    LEGI-CNRS, Laboratoire des Ecoulements Geophysiques et Industriels, CNRS, France

  • Nicholas Ouellette

    Cornell University, LASSP, Cornell University

  • Haitao Xu

    Cornell University, LASSP, Cornell University

  • Jacob Berg

    Risoe National Laboratory