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Modeling of Turbulent Flows Applied to Numerical Simulations of Galaxy Clusters

  • Conference paper
Book cover High Performance Computing in Science and Engineering, Garching/Munich 2007

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Abstract

FEARLESS (Fluid mEchanics with Adaptively Refined Large Eddy SimulationS) is a novel numerical approach for hydrodynamical simulations of turbulent flows, which combines the use of the adaptive mesh refinement (AMR) with a subgrid scale (SGS) model for the unresolved scales. We report some results of our first research phase, aimed to the test of new AMR criteria suitable for resolving velocity fluctuations. In this first stage of the project, no SGS model was used. Our simulations of a subcluster merger event clearly show that an accurate resolution of the turbulent flow is important not only for following the evolution of the shear instability, but also for its back-reaction on the subcluster core. A better resolution of the turbulent flow can also affect the level of turbulence in the cluster core, according to the first results of our cosmological simulations. Especially in the latter problem, a significant improvement in the modeling is expected from the use of the full FEARLESS implementation.

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Author information

Authors and Affiliations

  1. Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany

    Luigi Iapichino, Jens C. Niemeyer, Julian Adamek & Surajit Paul

  2. Dipartimento di Fisica e Astronomia dell’Universitá di Catania, and Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Via Santa Sofia 64, 95123, Catania, Italy

    Mario Scuderi

Authors
  1. Luigi Iapichino
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  2. Jens C. Niemeyer
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  3. Julian Adamek
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  4. Surajit Paul
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  5. Mario Scuderi
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Corresponding author

Correspondence to Luigi Iapichino .

Editor information

Editors and Affiliations

  1. Institut für Aerodynamik und Gasdynamik, Universität Stuttgart, Pfaffenwaldring 21, 70550, Stuttgart, Germany

    Siegfried Wagner

  2. Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482, Potsdam, Germany

    Matthias Steinmetz

  3. Lehrstuhl für Rechnertechnik und Rechnerorganisation, Technische Universität München, Boltzmannstr. 3, 85748, Garching b. München, Germany

    Arndt Bode

  4. Leibniz-Rechenzentrum, Boltzmannstr. 1, 85748, Garching b. München, Germany

    Matthias Brehm

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© 2009 Springer-Verlag Berlin Heidelberg

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Iapichino, L., Niemeyer, J.C., Adamek, J., Paul, S., Scuderi, M. (2009). Modeling of Turbulent Flows Applied to Numerical Simulations of Galaxy Clusters. In: Wagner, S., Steinmetz, M., Bode, A., Brehm, M. (eds) High Performance Computing in Science and Engineering, Garching/Munich 2007. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-69182-2_4

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