Finite difference/spectral element method for one and two-dimensional Riesz space fractional advection-dispersion equations

被引:6
|
作者
Saffarian, Marziyeh [1 ]
Mohebbi, Akbar [1 ]
机构
[1] Univ Kashan, Fac Math Sci, Dept Appl Math, Kashan, Iran
关键词
Spectral element method; Stability; Error estimate; Advection dispersion equation; Riesz space fractional derivative; SPECTRAL GALERKIN METHODS; IMPLICIT RUNGE-KUTTA; NUMERICAL-SOLUTION; DIFFUSION; APPROXIMATION; TIME; CONVERGENCE; STABILITY; DYNAMICS; FLOW;
D O I
10.1016/j.matcom.2021.10.020
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
In this paper, we propose an efficient numerical method for the solution of one and two dimensional Riesz space fractional advection-dispersion equation. To this end, we use the Crank-Nicolson scheme to discretize this equation in temporal direction and prove that the semi-discrete scheme is unconditionally stable. Then, we apply the spectral element method in spatial directions and obtain the fully discrete scheme. We present an error estimate for the fully discrete scheme. The presented numerical results demonstrate the accuracy and efficiency of the proposed method in comparison with other schemes in literature. (C) 2021 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:348 / 370
页数:23
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