Properties of the Boundary Zonal Flow (BZF) in rapidly rotating turbulent convection

ORAL

Abstract

Properties of the boundary zonal flow (BZF) in rapidly rotating Rayleigh-Benard convection are investigated numerically. Based on direct numerical simulations (DNS) using the finite-volume code GOLDFISH, we analyze in detail the BZF and, in particular, the traveling-mode structures and their dependencies on Ekman number. We also investigate the role of the BZF in the global heat transport in the system as well as the influence of the Prandtl number and the aspect ratio of the cylindrical convection cell on the BZF properties.

*The work is supported by Max Planck University Twente Center for Complex Fluid Dynamics, Los Alamos National Laboratory (LDRD program), Deutsche Forschungsgemeinschaft (SFB963, SPP1881, Sh405/4-1, Sh405/4-2, Sh405/7-1, Sh405/8-1, Ho5890/1-1, We5011/3-1)

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Authors

  • Xuan Zhang

    • Max Planck Institute f. Dynamics and Self-Organisation
    • Max Planck Institute for Dynamics and Self-Organization
    • Max Planck Insitute for Dynamics and Self-Organization

  • Lukas Zwirner

    • Max Planck Institute for Dynamics and Self-Organization, Goettingen
    • Max Planck Institute for Dynamics and Self-Organization
    • Max Planck Institute f. Dynamics and Self-Organisation
    • Max Planck Insitute for Dynamics and Self-Organization

  • Susanne Horn

    • Coventry University

  • Dennis Van Gils

    • University Twente
    • University of Twente

  • Marcel Wedi

    • Max Planck Institute f. Dynamics and Self-Organisation
    • Max Planck Institute for Dynamics and Self-Organization
    • Max Planck Insitute for Dynamics and Self-Organization

  • Guenter Ahlers

    • University of California, Santa Barbara

  • Stephan Weiss

    • Max Planck Institute f. Dynamics and Self-Organisation
    • Max Planck Institute for Dynamics and Self-Organization
    • Max Planck Insitute for Dynamics and Self-Organization

  • Eberhard Bodenschatz

    • Max Planck Institute for Dynamics and Self-Organization, Goettingen, Germany
    • Max Planck Institute f. Dynamics and Self-Organisation
    • Max Planck Institute for Dynamics and Self-Organization

  • Robert Ecke

    • Los Alamos National Laboratory

  • Olga Shishkina

    • Max-Planck Institute for Dynamics and Self-Organization, Goettingen
    • Max-Planck Institut
    • Max Planck Institute for Dynamics and Self-Organization
    • Max Planck Institute f. Dynamics and Self-Organisation