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CFD/CAA Simulations on HPC Systems

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Abstract

In this paper, a highly scalable numerical method is presented that allows to compute the aerodynamic sound from a turbulent flow field on HPC systems. A hybrid CFD-CAA method is used to compute the flow and the acoustic field, in which the two solvers are running in parallel to avoid expensive I/O operations for the acoustic source terms. Herein, the acoustic perturbation equations are solved by a high-order discontinuous Galerkin scheme using the acoustic source terms obtained from an approximate solution of the Navier-Stokes equations. Both solvers run simultaneously and operate on differently refined hierarchical Cartesian grids. This direct-hybrid method is validated by monopole and pressure pulse simulations and is used for performance measurements on current HPC systems. The results highlight the limitations of classic hybrid methods and show that the new approach is suitable for highly parallel simulations.

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Acknowledgements

This work has been performed with the support from the JARA-HPC SimLab Fluids & Solids Engineering of the RWTH Aachen University, Germany and the Forschungszentrum Jülich, Germany. The authors gratefully acknowledge the allocation of supercomputing time as well as the technical support by the High-Performance Computing Center Stuttgart of the University of Stuttgart, Germany and by the Jülich Supercomputing Centre of the Forschungszentrum Jülich, Germany.

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Authors and Affiliations

  1. Jülich Aachen Research Alliance - High Performance Computing, RWTH Aachen University, Aachen, Germany

    Michael Schlottke-Lakemper & Andreas Lintermann

  2. Institute of Aerodynamics, RWTH Aachen University, Aachen, Germany

    Fabian Klemp, Hsun-Jen Cheng, Matthias Meinke & Wolfgang Schröder

Authors
  1. Michael Schlottke-Lakemper
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  2. Fabian Klemp
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  3. Hsun-Jen Cheng
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  4. Andreas Lintermann
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  5. Matthias Meinke
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  6. Wolfgang Schröder
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Corresponding author

Correspondence to Michael Schlottke-Lakemper .

Editor information

Editors and Affiliations

  1. Höchstleistungsrechenzentrum, Universität Stuttgart , Stuttgart, Baden-Württemberg, Germany

    Michael M. Resch

  2. Europe GmbH, NEC High Performance Computing Europe GmbH, Düsseldorf, Nordrhein-Westfalen, Germany

    Wolfgang Bez

  3. Europe GmbH, NEC High Performance Computing Europe GmbH, Stuttgart, Germany

    Erich Focht

  4. High Performance Computing, University of Stuttgart, Stuttgart, Germany

    Nisarg Patel

  5. Cyberscience Center, Tohoku University , Sendai, Japan

    Hiroaki Kobayashi

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© 2016 Springer International Publishing AG

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Schlottke-Lakemper, M., Klemp, F., Cheng, HJ., Lintermann, A., Meinke, M., Schröder, W. (2016). CFD/CAA Simulations on HPC Systems. In: Resch, M., Bez, W., Focht, E., Patel, N., Kobayashi, H. (eds) Sustained Simulation Performance 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-46735-1_12

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