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Numerical Solution of Nonstationary Problems for a Space-Fractional Diffusion Equation

  • Petr N. Vabishchevich EMAIL logo
Published/Copyright: March 9, 2016

Abstract

An unsteady problem is considered for a space-fractional diffusion equation in abounded domain. A first-order evolutionary equation containing a fractional power of an elliptic operator of second order is studied for general boundary conditions of Robin type. Finite element approximation in space is employed. To construct approximation in time, regularized two-level schemes are used. The numerical implementation is based on solving the equation with the fractional power of the elliptic operator using an auxiliary Cauchy problem for a pseudo-parabolic equation. The results of numerical experiments are presented for a model two-dimensional problem.

Acknowledgements

This work was supported by the Russian Foundation for Basic Research (Projects 14-01-00785, 15-01-00026).

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  1. Please cite to this paper as published in:

    Fract. Calc. Appl. Anal., Vol. 19, No 1 (2016), pp. 116–139, DOI: 10.1515/fca-2016-0007

Received: 2014-12-5
Revised: 2015-7-9
Published Online: 2016-3-9
Published in Print: 2016-2-1

© 2016 Diogenes Co., Sofia

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