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Local Fourier Analysis for Edge-Based Discretizations on Triangular Grids

Published online by Cambridge University Press:  03 March 2015

Carmen Rodrigo*
Affiliation:
Department of Applied Mathematics, University of Zaragoza, C/ Maria de Luna 3, 50018, Zaragoza, Spain
Francisco Sanz
Affiliation:
BIFI University of Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
Francisco J. Gaspar
Affiliation:
Department of Applied Mathematics, University of Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
Francisco J. Lisbona
Affiliation:
Department of Applied Mathematics, University of Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
*
*Email addresses: carmenr@unizar.es (C. Rodrigo), frasanz@bifi.es (F. Sanz), fjgaspar@unizar.es (F. J. Gaspar), lisbona@unizar.es (F. J. Lisbona)

Abstract

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In this paper, we present a local Fourier analysis framework for analyzing the different components within multigrid solvers for edge-based discretizations on triangular grids. The different stencils associated with edges of different orientation in a triangular mesh make this analysis special. The resulting tool is demonstrated for the vector Laplace problem discretized by mimetic finite difference schemes. Results from the local Fourier analysis, as well as experimentally obtained results, are presented to validate the proposed analysis.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2015