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.
Agglomeration Multigrid for the Vertex-Centered Dual Discontinuous Galerkin Method
ADIGMA - A European Initiative on the Development of Adaptive Higher-Order Variational Methods for Aerospace Applications ; 2 ; 301-308
2010-01-01
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Coarse Mesh , Discontinuous Galerkin , Discontinuous Galerkin Method , Mesh Level , Convergence Acceleration Engineering , Engineering Fluid Dynamics , Astronomy, Astrophysics and Cosmology , Classical Continuum Physics , Aerospace Technology and Astronautics , Appl.Mathematics/Computational Methods of Engineering , Numerical and Computational Physics
P-multigrid Discontinuous Galerkin Method for Compressible Turbulent Flows
British Library Conference Proceedings | 2013
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