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

Andrea Beck (), Min Gao (), Daniel Kempf (), Patrick Kopper (), Nico Krais (), Marius Kurz (), Jonas Zeifang () and Claus-Dieter Munz ()
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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

A chapter in High Performance Computing in Science and Engineering '20, 2021, pp 343-358 from Springer

Abstract: 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.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-030-80602-6_22

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DOI: 10.1007/978-3-030-80602-6_22

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