Bernstein dual-Petrov-Galerkin method: application to 2D time fractional diffusion equation
Abstract
In this paper, we develop a Bernstein dual-Petrov-Galerkin method for the numerical simulation of a two-dimensional fractional diffusion equation. A spectral discretization is applied by introducing suitable combinations of dual Bernstein polynomials as the test functions and the Bernstein polynomials as the trial ones. We derive the exact sparse operational matrix of differentiation for the dual Bernstein basis which provides a matrix based approach for the spatial discretization. It is shown that the method leads to banded linear systems that can be solved efficiently. The stability and convergence of the proposed method is discussed. Finally, some numerical examples are provided to support the theoretical claims and to show the accuracy and efficiency of the method.
Cite
@article{arxiv.1605.06744,
title = {Bernstein dual-Petrov-Galerkin method: application to 2D time fractional diffusion equation},
author = {Mostafa Jani and Shahnam Javadi and Esmail Babolian and Dambaru Bhatta},
journal= {arXiv preprint arXiv:1605.06744},
year = {2017}
}
Comments
18 pages, Accepted for publication in Computational and Applied Mathematics (Springer)