New compact difference scheme for solving the fourth-order time fractional sub-diffusion equation of the distributed order
New compact difference scheme for solving the fourth-order time fractional sub-diffusion equation of the distributed order
复制标题
求解分布阶四阶时间分数次扩散方程的新紧差分格式
DOI:
10.1016/j.apnum.2018.03.005
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发表时间:
2018-07
影响因子:
2.8
通讯作者:
Zhang Chengjian
中科院分区:
文献类型:
--
作者:
Ran Maohua;Zhang Chengjian
In this paper, a class of new compact difference schemes is presented for solving the fourth-order time fractional sub-diffusion equation of the distributed order. By using an effective numerical quadrature rule based on boundary value method to discretize the integral term in the distributed-order derivative, the original distributed order differential equation is approximated by a multi-term time fractional sub-diffusion equation, which is then solved by a compact difference scheme. It is shown that the suggested compact difference scheme is stable and convergent in L∞ norm with the convergence order O (τ 2+ h 4+(Δ γ) p) when a boundary value method of order p is used, where τ, h and Δγ are the step sizes in time, space and distributed-order variables, respectively. Numerical results are reported to verify the high order accuracy and efficiency of the suggested scheme. Moreover, in the example, comparisons between some existing methods and the suggested scheme is also provided, showing that our method doesn't compromise in computational time.
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影响因子:
4.1
作者:
叶海平;Fawang Liu
通讯作者:
Fawang Liu
DOI:
10.1016/j.amc.2011.08.001
发表时间:
2011-11
期刊:
Appl. Math. Comput.
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1007/978-1-4471-2852-6
发表时间:
2012-02
期刊:
--
影响因子:
--
作者:
Z. Jiao;Y. Chen;I. Podlubny
通讯作者:
Z. Jiao;Y. Chen;I. Podlubny
DOI:
--
发表时间:
2001
期刊:
--
影响因子:
--
作者:
K. Diethelm;N. Ford
通讯作者:
K. Diethelm;N. Ford
影响因子:
2
作者:
Tian, Wenyi;Zhou, Han;Deng, Weihua
通讯作者:
Deng, Weihua