Matrix approach to discrete fractional calculus II: partial fractional differential equations

Details Matrix approach to discrete fractional calculus II: partial fractional differential equations Matrix approach to discrete fractional calculus II: partial fractional differential equations

2008-11-09

arxiv.org/abs/0811.1355v4

Journal of Computational Physics, vol. 228, no. 8, 1 May 2009, pp. 3137-3153

Mathematics

Numerical Analysis

33 pages, 12 figures

Scientific paper

10.1016/j.jcp.2009.01.014

A new method that enables easy and convenient discretization of partial differential equations with derivatives of arbitrary real order (so-called fractional derivatives) and delays is presented and illustrated on numerical solution of various types of fractional diffusion equation. The suggested method is the development of Podlubny's matrix approach (Fractional Calculus and Applied Analysis, vol. 3, no. 4, 2000, 359--386). Four examples of numerical solution of fractional diffusion equation with various combinations of time/space fractional derivatives (integer/integer, fractional/integer, integer/fractional, and fractional/fractional) with respect to time and to the spatial variable are provided in order to illustrate how simple and general is the suggested approach. The fifth example illustrates that the method can be equally simply used for fractional differential equations with delays. A set of MATLAB routines for the implementation of the method as well as sample code used to solve the examples have been developed.

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