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Error Splitting Preservation for High Order Finite Difference Schemes in the Combination Technique

Published online by Cambridge University Press:  20 June 2017

Christian Hendricks*
Affiliation:
Bergische Universität Wuppertal, Applied Mathematics and Numerical Analysis (AMNA), Gaußstrasse 20, 42119 Wuppertal, Germany
Matthias Ehrhardt*
Affiliation:
Bergische Universität Wuppertal, Applied Mathematics and Numerical Analysis (AMNA), Gaußstrasse 20, 42119 Wuppertal, Germany
Michael Günther*
Affiliation:
Bergische Universität Wuppertal, Applied Mathematics and Numerical Analysis (AMNA), Gaußstrasse 20, 42119 Wuppertal, Germany
*
*Corresponding author. Email addresses:christian.hendricks@gmx.de (C. Hendricks) ehrhardt@math.uni-wuppertal.de (M. Ehrhardt) guenther@math.uni-wuppertal.de (M. Günther)
*Corresponding author. Email addresses:christian.hendricks@gmx.de (C. Hendricks) ehrhardt@math.uni-wuppertal.de (M. Ehrhardt) guenther@math.uni-wuppertal.de (M. Günther)
*Corresponding author. Email addresses:christian.hendricks@gmx.de (C. Hendricks) ehrhardt@math.uni-wuppertal.de (M. Ehrhardt) guenther@math.uni-wuppertal.de (M. Günther)

Abstract

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In this paper we introduce high dimensional tensor product interpolation for the combination technique. In order to compute the sparse grid solution, the discrete numerical subsolutions have to be extended by interpolation. If unsuitable interpolation techniques are used, the rate of convergence is deteriorated. We derive the necessary framework to preserve the error structure of high order finite difference solutions of elliptic partial differential equations within the combination technique framework. This strategy enables us to obtain high order sparse grid solutions on the full grid. As exemplifications for the case of order four we illustrate our theoretical results by two test examples with up to four dimensions.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2017