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Extreme Events for Two-Particles Separations in Turbulent Flows

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Progress in Turbulence V

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 149))

Abstract

Results from high resolution numerical simulations of tracer particles emitted from localised sources in homogeneous and isotropic flows are presented. A huge number of tracers are emitted in order to reach an unprecedented statistics concerning particles pairs motion. We show that the far tails of the particles pair separation Probability Distribution Function can not be described by a Richardsonlike distribution, even if finite Reynolds effects are introduced. We argue that to describe extreme event statistics, velocity temporal correlations and non-Gaussian fluctuations must be taken into account.

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Author information

Authors and Affiliations

  1. Dept. Physics and INFN, University of Rome ‘Tor Vergata’, 00133, Rome, Italy

    Luca Biferale

  2. ISAC-CNR, Str. Prov. Lecce - Monteroni and INFN, Sez. Lecce, 73100, Lecce, Italy

    A. S. Lanotte

  3. Dept. Physics, University of Rome ‘Tor Vergata’, 00133, Rome, Italy

    R. Scatamacchia

  4. Department of Physics and Department of Mathematics and Computer Science, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands

    F. Toschi

Authors
  1. Luca Biferale
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  2. A. S. Lanotte
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  3. R. Scatamacchia
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  4. F. Toschi
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Corresponding author

Correspondence to Luca Biferale .

Editor information

Editors and Affiliations

  1. Department of Industrial Eng. (DIN), Universita di Bologna, Forli, Italy

    Alessandro Talamelli

  2. Department of Mechanical Engineering, TU Darmstadt, Darmstadt, Germany

    Martin Oberlack

  3. Institute of Physics, University of Oldenburg, Oldenburg, Germany

    Joachim Peinke

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Biferale, L., Lanotte, A.S., Scatamacchia, R., Toschi, F. (2014). Extreme Events for Two-Particles Separations in Turbulent Flows. In: Talamelli, A., Oberlack, M., Peinke, J. (eds) Progress in Turbulence V. Springer Proceedings in Physics, vol 149. Springer, Cham. https://doi.org/10.1007/978-3-319-01860-7_2

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