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Increasing the Flexibility of the High Order Discontinuous Galerkin Framework FLEXI Towards Large Scale Industrial Applications

In: High Performance Computing in Science and Engineering '20

Author

Listed:
  • Andrea Beck

    (Otto-von-Guericke University Magdeburg, Laboratory of Fluid Dynamics and Technical Flows)

  • Min Gao

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

  • Daniel Kempf

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

  • Patrick Kopper

    (University of Stuttgart, Institute of Aircraft Propulsion Systems)

  • Nico Krais

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

  • Marius Kurz

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

  • Jonas Zeifang

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

  • Claus-Dieter Munz

    (University of Stuttgart, Institute of Aerodynamics and Gas Dynamics)

Abstract

This paper summarizes our progress in the application and improvement of a high order discontinuous Galerkin (DG) method for scale resolving fluid dynamics simulations towards robust and flexible industrial applications. We report the results obtained on the Cray XC40 Hazel Hen cluster at HLRS and show code performance. We present three application cases and developments: An implicit time integration scheme for split-form DG schemes allows us to solve stiff problems with increased efficiency, which will open up new classes of problems for simulations with FLEXI. We follow this by discussing a Large Eddy Simulation (LES) of a compressible turbulent boundary layer and provide comparison to DNS data. Lastly, we demonstrate how to extend the high order scheme with a consistent and conservative sliding mesh interface, and present results of a 1.5 stage turbine simulation with wall-resolved LES.

Suggested Citation

  • Andrea Beck & Min Gao & Daniel Kempf & Patrick Kopper & Nico Krais & Marius Kurz & Jonas Zeifang & Claus-Dieter Munz, 2021. "Increasing the Flexibility of the High Order Discontinuous Galerkin Framework FLEXI Towards Large Scale Industrial Applications," Springer Books, in: Wolfgang E. Nagel & Dietmar H. Kröner & Michael M. Resch (ed.), High Performance Computing in Science and Engineering '20, pages 343-358, Springer.
    • Handle: RePEc:spr:sprchp:978-3-030-80602-6_22
    DOI: 10.1007/978-3-030-80602-6_22
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