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High-Pressure Real-Gas Jet and Throttle Flow as a Simplified Gas Injector Model Using a Discontinuous Galerkin Method

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High Performance Computing in Science and Engineering ´16

Abstract

Industrial devices such as gas injectors for automotive combustion engines operate at ever-increasing pressures and already today reach regimes beyond the ideal-gas approximation. Numerical simulations are an important part of the design process for such components. In this paper, we present a case study with a computational fluid dynamics code based on the discontinuous Galerkin spectral element method with a real-gas equation of state. We assess a high-pressure throttle and jet flow as a basic model of a gas injector. We apply a shock-capturing method to achieve a robust simulation, and a newly developed method to maintain high efficiency despite load imbalances introduced by the shock capturing. The results indicate a dynamic mass flow rate at different pressure ratios between the inlet and outlet.

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Acknowledgements

This work is supported by the Federal Ministry of Education and Research (BMBF) within the HPC III project HONK “Industrialization of high-resolution numerical analysis of complex flow phenomena in hydraulic systems”. We also thank the Gauss Centre for Supercomputing (GCS) which provided us with the necessary computing resources on the Hazel Hen.

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Authors and Affiliations

  1. Institute for Aerodynamics and Gas dynamics, University of Stuttgart, Pfaffenwaldring 21, 70569, Stuttgart, Germany

    Malte Hoffmann & Claus-Dieter Munz

  2. Visualization Research Center, University of Stuttgart, Allmandring 19, 70569, Stuttgart, Germany

    Sebastian Boblest & Thomas Ertl

  3. Robert Bosch GmbH, Robert-Bosch-Campus 1, 71272 Renningen, Germany

    Fabian Hempert & Uwe Iben

  4. High Performance Computing Center, University of Stuttgart, Nobelstrasse 19, 70569 Stuttgart, Germany

    Philipp Offenhäuser & Colin W. Glass

  5. Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany

    Filip Sadlo

Authors
  1. Fabian Hempert
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  2. Sebastian Boblest
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  3. Malte Hoffmann
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  4. Philipp Offenhäuser
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  5. Filip Sadlo
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  6. Colin W. Glass
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  7. Claus-Dieter Munz
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  8. Thomas Ertl
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  9. Uwe Iben
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Corresponding author

Correspondence to Malte Hoffmann .

Editor information

Editors and Affiliations

  1. Zentrum für Informationsdienste und Hochleistungsrechnen (ZIH), Technische Universität Dresden, Dresden, Germany

    Wolfgang E. Nagel

  2. Abteilung für Angewandte Mathematik, Universität Freiburg, Freiburg, Germany

    Dietmar H. Kröner

  3. Höchstleistungsrechenzentrum Stuttgart (HLRS), Universität Stuttgart, Stuttgart, Germany

    Michael M. Resch

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Hempert, F. et al. (2016). High-Pressure Real-Gas Jet and Throttle Flow as a Simplified Gas Injector Model Using a Discontinuous Galerkin Method. In: Nagel, W.E., Kröner, D.H., Resch, M.M. (eds) High Performance Computing in Science and Engineering ´16. Springer, Cham. https://doi.org/10.1007/978-3-319-47066-5_20

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