## Abstract and Applied Analysis

### Finite Element Solutions for the Space Fractional Diffusion Equation with a Nonlinear Source Term

#### Abstract

We consider finite element Galerkin solutions for the space fractional diffusion equation with a nonlinear source term. Existence, stability, and order of convergence of approximate solutions for the backward Euler fully discrete scheme have been discussed as well as for the semidiscrete scheme. The analytical convergent orders are obtained as $O(k+{h}^{\widetilde{\gamma }})$, where $\widetilde{\gamma }$ is a constant depending on the order of fractional derivative. Numerical computations are presented, which confirm the theoretical results when the equation has a linear source term. When the equation has a nonlinear source term, numerical results show that the diffusivity depends on the order of fractional derivative as we expect.

#### Article information

Source
Abstr. Appl. Anal., Volume 2012, Special Issue (2012), Article ID 596184, 25 pages.

Dates
First available in Project Euclid: 5 April 2013

https://projecteuclid.org/euclid.aaa/1365168355

Digital Object Identifier
doi:10.1155/2012/596184

Mathematical Reviews number (MathSciNet)
MR2969984

Zentralblatt MATH identifier
1253.65148

#### Citation

Choi, Y. J.; Chung, S. K. Finite Element Solutions for the Space Fractional Diffusion Equation with a Nonlinear Source Term. Abstr. Appl. Anal. 2012, Special Issue (2012), Article ID 596184, 25 pages. doi:10.1155/2012/596184. https://projecteuclid.org/euclid.aaa/1365168355

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