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数学与物理
应用数学进展
Vol. 13 No. 2 (February 2024)
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Caputo-Katugampola时间分数阶扩散方程的数值求解方法
Numerical Solution Method for Caputo-Katugampola Time-Fractional Diffusion Equation
DOI:
10.12677/AAM.2024.132073
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PDF
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被引量
下载: 34
浏览: 70
作者:
张洁晶
:长沙理工大学,数学与统计学院,湖南 长沙
关键词:
Caputo-Katugampola时间分数阶导数
;
时间分数阶扩散方程
;
有限差分
;
Caputo-Katugampola Time-Fractional Derivative
;
Time-Fractional Diffusion Equation
;
Finite Difference
摘要:
本文研究带Caputo-Katugampola分数导数时间分数阶扩散方程的数值解法: 使用中心差分格 式离散空间扩散顶,采用L
1
差分格式离散时间分数阶导数。 实验结果表明该方法在空间和时间上 的收敛速度分别为2阶和2 − α阶。
Abstract:
We study a numerical solution of the time-fractional diffusion equation with Caputo- Katugampola fractional derivative. We discretize the spatial diffusion term using central-difference and the time-fractional derivative using L
1
difference scheme. The numerical test shows that the convergence rate of the method is 2th order in space and (2 − α)th order in time, respectively.
文章引用:
张洁晶. Caputo-Katugampola时间分数阶扩散方程的数值求解方法[J]. 应用数学进展, 2024, 13(2): 744-749.
https://doi.org/10.12677/AAM.2024.132073
参考文献
[1]
Katugampola, U.N. (2011) New Approach to a Generalized Fractional Integral. Applied Math- ematics and Computation, 218, 860-865.
https://doi.org/10.1016/j.amc.2011.03.062
[2]
Zeng, S., Baleanu, D., Bai, Y., et al. (2017) Fractional Differential Equations of Caputo- Katugampola Type and Numerical Solutions. Applied Mathematics and Computation, 315, 549-554.
https://doi.org/10.1016/j.amc.2017.07.003
[3]
Bhangale, N., Kachhia, K.B. and Gmez-Aguilar, J.F. (2022) A New Iterative Method with Laplace Transform for Solving Fractional Differential Equations with Caputo Generalized Frac- tional Derivative. Engineering with Computers, 38, 2125-2138.
https://doi.org/10.1007/s00366-020-01202-9
[4]
Singh, J., Alshehri, A.M., Momani, S., et al. (2022) Computational Analysis of Fractional Diffusion Equations Occurring in Oil Pollution. Mathematics, 10, Article 3827.
https://doi.org/10.3390/math10203827
[5]
Sene, N. (2019) Analytical Solutions and Numerical Schemes of Certain Generalized Fractional Diffusion Models. The European Physical Journal Plus, 134, Article No. 199.
https://doi.org/10.1140/epjp/i2019-12531-4
[6]
Stynes, M., O’Riordan, E. and Gracia, J.L. (2017) Error Analysis of a Finite Difference Method on Graded Meshes for A Time-Fractional Diffusion Equation. SIAM Journal on Numerical Analysis, 55, 1057-1079.
https://doi.org/10.1137/16M1082329
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