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Agglomeration Multigrid for the Vertex-Centered Dual Discontinuous Galerkin Method

  • Sven-Erik Ekström
  • Martin Berggren
Conference paper
  • 1.2k Downloads
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 113)

Abstract

Agglomoration multigrid is used in many finite-volume codes for aerodynamic computations in order to reduce solution times. We show that an existing agglomeration multigrid solver developed for equations discretized with a vertex-centered, edge-based finite-volume scheme can be extended to accelerate convergence also for a vertex-centered discontinuous Galerkin method. Preliminary results for a subsonic as well as a transonic test case for the Euler equations in two space dimensions show a significant convergence acceleration for the discontinuous Galerkin equations using the agglomoration multigrid strategy.

Keywords

Coarse Mesh Discontinuous Galerkin Discontinuous Galerkin Method Mesh Level Convergence Acceleration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Sven-Erik Ekström
    • 1
  • Martin Berggren
    • 2
  1. 1.Department of Information TechnologyUppsala UniversityUppsalaSweden
  2. 2.Department of Computing ScienceUmeå UniversityUmeåSweden

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