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Turbulent Cascades II pp 197–204Cite as

Non Spherical and Inertial Particles in Couette Turbulent Large Scale Structures

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Part of the book series: ERCOFTAC Series ((ERCO,volume 26))

Abstract

We are studying dispersion of finite-size particles in a turbulent plane Couette flow by numerical simulations. The effect of particle non-sphericity was discussed (particles are neutrally buoyant and shape varies from oblate to prolate, aspect ratio is ranging from 0.5 to 2). Particle dispersion is analyzed also when inertia is considered for different particle densities for spherical particles (while keeping comparable Stokes number). This work yields evidences that the particle distribution in turbulent flow coherent structures is in general correlated to the cycle of regeneration of turbulence in Couette flow (the strongest correlation being for massless bubbles), and that the particle residence time in large scale vortices is equal to the characteristic time scale of the flow regeneration cycle.

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Authors and Affiliations

  1. Institut de Mécanique des Fluides de Toulouse, IMFT, Université de Toulouse, CNRS, Toulouse, France

    Guiquan Wang, Annaïg Pedrono & Eric Climent

  2. FERMAT, Université de Toulouse, CNRS, INPT, INSA, UPS, Toulouse, France

    Guiquan Wang

  3. Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France

    Micheline Abbas

Authors
  1. Guiquan Wang
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  2. Micheline Abbas
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  3. Annaïg Pedrono
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  4. Eric Climent
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Corresponding author

Correspondence to Eric Climent .

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Editors and Affiliations

  1. Laboratoire de Mécanique des Fluides et d’Acoustique CNRS, Université de Lyon, École centrale de Lyon, Écully, France

    Mikhael Gorokhovski

  2. Laboratoire de Mécanique des Fluides et d’Acoustique CNRS, Université de Lyon, École centrale de Lyon, Écully, France

    Fabien S. Godeferd

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Wang, G., Abbas, M., Pedrono, A., Climent, E. (2019). Non Spherical and Inertial Particles in Couette Turbulent Large Scale Structures. In: Gorokhovski, M., Godeferd, F. (eds) Turbulent Cascades II. ERCOFTAC Series, vol 26. Springer, Cham. https://doi.org/10.1007/978-3-030-12547-9_21

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  • DOI: https://doi.org/10.1007/978-3-030-12547-9_21

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-12546-2

  • Online ISBN: 978-3-030-12547-9

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