A fast linearized finite difference method for the nonlinear multi-term time-fractional wave equation
A fast linearized finite difference method for the nonlinear multi-term time-fractional wave equation
复制标题
非线性多项时间分数阶波动方程的快速线性化有限差分法
DOI:
10.1016/j.apnum.2019.11.012
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发表时间:
2019-02
影响因子:
2.8
通讯作者:
Wang Zhibo
中科院分区:
文献类型:
--
作者:
Lyu Pin;Liang Yuxiang;Wang Zhibo
In this paper, we study a fast and linearized finite difference method to solve the nonlinear time-fractional wave equation with multi fractional orders. We first propose a discretization to the multi-term Caputo derivative based on the recently established fast L 2-1 σ formula and a weighted approach. Then we apply the discretization to construct a fully fast linearized discrete scheme for the nonlinear problem under consideration. The nonlinear term, which just fulfills the Lipschitz condition, will be evaluated on the previous time level. Therefore only linear systems are needed to be solved for obtaining numerical solutions. The proposed scheme is shown to have second-order unconditional convergence with respect to the discrete H 1-norm. The proposed fast linearized method can be directly extended to solve the nonlinear distributed-order time-fractional wave problem. Numerical examples are provided to justify the efficiency.
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影响因子:
3
作者:
Liu F;Meerschaert MM;McGough RJ;Zhuang P;Liu Q
通讯作者:
Liu Q
DOI:
10.2307/3620819
发表时间:
2000-11
期刊:
The Mathematical Gazette
影响因子:
--
作者:
G. Leversha
通讯作者:
G. Leversha
影响因子:
1.3
作者:
Kenichi Sakamoto;Masahiro Yamamoto
通讯作者:
Kenichi Sakamoto;Masahiro Yamamoto
影响因子:
2.1
作者:
K. Mustapha;D. Schötzau
通讯作者:
K. Mustapha;D. Schötzau
DOI:
10.1142/9789813230927_0003
发表时间:
2018-06
期刊:
Fractional Calculus
影响因子:
--
作者:
Richard Herrmann
通讯作者:
Richard Herrmann