DNS and PIV investigation of nonlinear instability in a precessing cylinder flow

ORAL

Abstract

Direct numerical simulation results for flow inside a spinning, precessing cylinder of fluid corresponding to a previous experimental study and its extensions are presented and analysed in relation to experimental results and weakly nonlinear theory based on triad interaction of inviscid Kelvin modes. Simulation outcomes agree well with the experimental results both qualitatively and quantitatively, and additional processing reveals more in-depth support for the weakly nonlinear theory than could be demonstrated in the experiments. Additionally, numerical results provide meridional and azimuthal mean flow data.

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Authors

  • Hugh Blackburn

    Monash University, Monash University, Australia

  • Thomas Albrecht

    Monash University, Australia, Monash University

  • Richard Manasseh

    Swinburne University of Technology, Australia, Swinburne University of Technology

  • Juan Lopez

    Arizona State University, Arizona State Univ, Arizona State University, USA

  • Patrice Meunier

    None, Aix Marseille Universite, CNRS, Centrale Marseille, IRPHE UMR 7342, 13384 Marseille, France, IRPHE, Aix-Marseille Univ., CNRS, Ecole Centrale Marseille, RPHE, CNRS, and Aix-Marseille Universit ?e, Marseille, France, IRPHE, CNRS, L'Institut de Recherche sur les Phenomenes Hors Equilibre