Non-resonant Forcing in Rayleigh-B\'enard Convection

ORAL

Abstract

We report experiments on spatially forced Rayleigh-B\'enard convection in a large aspect ratio cell. The stability region of forced straight rolls in the parameter space spanned by the reduced Rayleigh number and the forcing wavenumber is determined and compared to the theoretical prediction. Intriguing patterns found away from the stability region such as localized coherent states and ``brick-wall'' patterns are described in detail.

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Authors

  • Stephan Weiss

    MPI for Dynamics and Self-Organization

  • Gabriel Seiden

    MPI for Dynamics and Self-Organization

  • Eberhard Bodenschatz

    MPI for Dynamics and Self-Organization, MPIDS and ICTR and LASSP, Cornell University, MPIDS, ICTR \& LASSP, Cornell University, Max Planck Institute for Dynamics and Self-Organization, Max Planck Institute for Dynamics and Self-Organization, Physics and Mechanical and Aerospace Engineering, Cornell University

  • Werner Pesch

    Universitaet Ayreuth