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Parallel direct Poisson solver for DNS of complex turbulent flows using Unstructured Meshes

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Parallel Computational Fluid Dynamics 2008

Part of the book series: Lecture Notes in Computational Science and Engineering ((LNCSE,volume 74))

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Abstract

In this paper a parallel direct Poisson solver for DNS simulation of turbulent flows statistically homogeneous in one spatial direction is presented. It is based on a Fourier diagonalization and a Schur decomposition on the spanwise and streamwise directions respectively. Numerical experiments carried out in order to test the robustness and efficiency of the algorithm are presented. This solver is being used for a DNS of a turbulent flow around a circular cylinder at Re = 1 ×104, the size of the required mesh is about 104 M elements and the discrete Poisson equation derived is solved in less than one second of CPU time using 720 CPUs of Marenostrum supercomputer.

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References

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Author information

Authors and Affiliations

  1. Centre Tecnològic de Transferència de Calor, Technical University of Catalonia, ETSEIAT, C/Colom 11, 08222, Terrassa, Spain

    R. Borrell, O. Lehmkuhl, F. X. Trias, M. Soria & A. Oliva

  2. Termo Fluids, S.L., Mag Colet, 8, 08204, Sabadell (Barcelona), Spain

    R. Borrell & O. Lehmkuhl

Authors
  1. R. Borrell
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  2. O. Lehmkuhl
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  3. F. X. Trias
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  4. M. Soria
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  5. A. Oliva
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Corresponding author

Correspondence to R. Borrell .

Editor information

Editors and Affiliations

  1. , Institut Camille Jordan, Université Lyon 1 - CNRS, Bd du 11 Novembre 1918 43, Villeurbanne, 69622, France

    Damien Tromeur-Dervout

  2. , Institut für Technische Mechanik, TU Clausthal, Adolph-Roemer-Str. 2A2a, Clausthal-Zellerfeld, 38678, Germany

    Gunther Brenner

  3. Daresbury Laboratory, Daresbury Science & Innovation Campus, Science & Technology Facilities Council, Warrington, WA4 4AD, Cheshire, United Kingdom

    David R. Emerson

  4. INRIA - SAGE, Campus de Beaulieu, Rennes, 35042, France

    Jocelyne Erhel

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Borrell, R., Lehmkuhl, O., Trias, F.X., Soria, M., Oliva, A. (2010). Parallel direct Poisson solver for DNS of complex turbulent flows using Unstructured Meshes. In: Tromeur-Dervout, D., Brenner, G., Emerson, D., Erhel, J. (eds) Parallel Computational Fluid Dynamics 2008. Lecture Notes in Computational Science and Engineering, vol 74. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14438-7_24

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