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Turbulence experiments in a rotating frame


french version

F. Moisy, M. Rabaud, C. Morize, J. Seiwert, G. Tan, L. Agostini.


Turbulence subjected to system rotation is present in a wide range of applications, from engineering to geophysics and astrophysics. Although often coupled to other effects, such as stratification or confinement, rotating turbulence in itself is a delicate issue which is not completely understood. The trends toward two-dimensionality, the influence of the background rotation on the energy decay law, or the asymmetry between cyclonic and anticyclonic vortices, are among the most challenging issues for rotating turbulence.

This movie shows an earlier experiment (Morize, 2006) performed in a small scale rotating platform, aiming to investigate the influence of a background rotation on the decay of an homogeneous turbulence. Experiments are carried out in a 60 L water filled rotating tank, in which a grid is rapidly translated. A corotating camera acquires images of seeding particles illuminated by a horizontal laser sheet at mid-height, and velocity fields are deduced using PIV (particle Image Velocimetry).

Those experiments are now continued on the new Gyroflow rotating platform.


Fig. 1 - Experimental setup.


See also:


Publications

  • Direct measurements of anisotropic energy transfers in a rotating turbulence experiment
    C. Lamriben, P.-P. Cortet, F. Moisy, Phys. Rev. Lett. 107, 024503 (2011).
    [Abstract | PDF]
  • Excitation of inertial modes in a closed grid turbulence experiment under rotation
    C. Lamriben, P.P. Cortet, F. Moisy, L. Maas, Phys. Fluids 23, 015102 (2011).
    [Abstract | PDF]
  • Decay laws, anisotropy and cyclone-anticyclone asymmetry in decaying rotating turbulence
    F. Moisy, C. Morize, M. Rabaud, J. Sommeria, J. Fluid Mech. 666, 5-35 (2011).
    [Abstract | PDF | suppl. material]
  • Structure functions and energy transfers in a decaying rotating turbulence experiment
    F. Moisy, L. Agostini, G. Tan, 12th Euromech European Turbulence Conference, Marburg, Sept. 7 - 10, 2009.
    [PDF]
  • On the decrease of intermittency in decaying rotating turbulence
    J. Seiwert, C. Morize, F. Moisy, Phys. Fluids 20, 071702 (2008).
    [Abstract | PDF]
  • Dynamics of the anisotropy in decaying rotating turbulence with confinement effects
    C. Morize, F. Moisy, M. Rabaud and J. Sommeria, Congrès Français de Mécanique (2007).
    [PDF]
  • De la turbulence 3D à la turbulence anisotrope dominée par la rotation
    C. Morize, thèse de l'Université Denis Diderot - Paris 7 (2006).
    [PDF]
  • Decay laws, anisotropy and cyclone-anticyclone asymmetry in decaying rotating turbulence
    F. Moisy, C. Morize, M. Rabaud, J. Sommeria, J. Fluid Mech. 666, 5-35 (2011).
    [Abstract | PDF | suppl. material]
  • The decay law of grid turbulence in a rotating tank
    F. Moisy, C. Morize and M. Rabaud, CD-ROM Conference on Turbulence and Interactions TI2006, May 29 - June 2, 2006, Porquerolles, France (2006).
    [PDF]
  • Energy decay of rotating turbulence in confined geometry
    C. Morize and F. Moisy, Phys. Fluids 18, 065107 (2006).
    [Abstract | PDF]
  • Decaying grid-generated turbulence in a rotating tank
    C. Morize, F. Moisy and M. Rabaud, Phys. Fluids 17 (9), 095105 (2005).
    [Abstract | PDF]
  • Energy spectrum in rotating turbulence
    F. Moisy, C. Morize and M. Rabaud, XXIst ICTAM Conference, Warsaw, CD-ROM ISBN 83-89697-01-1 (2004).
    [PDF]


Last modification: December 02 2011, 12:51:34.