用四次b样条法对时间分数阶偏微分方程进行数值研究

Q1 Mathematics
Fahad K. Nashmi, Bushra A. Taha
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引用次数: 0

摘要

本文利用四次b样条法求解时间分数阶偏微分方程。分数卡普托导数被用来描述受记忆效应影响的异常扩散过程。所提出的数值方法利用四次b样条函数进行空间离散化,并采用有限差分法处理时间分数阶导数。基于傅里叶方法,对其稳定性进行了评价,证明了其在处理分数阶模型中的有效性。数值实验,包括线性和非线性的情况下,进行了说明该方法的有效性和准确性。将所得结果与精确解和替代数值方法进行了比较,证明了收敛性能和计算效率的提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical study of the time-fractional partial differential equations by using quartic B-spline method
This paper utilizes the quartic B-spline method for the numerical resolution of time-fractional partial differential equations. The fractional Caputo derivative is employed to depict anomalous diffusion processes influenced by memory effects. The proposed numerical method utilizes quartic B-spline functions for spatial discretization and employs a finite difference method to address the time-fractional derivative. Based on the Fourier method, its stability has been evaluated to demonstrate its efficacy in addressing fractional-order models. Numerical experiments, encompassing both linear and nonlinear scenarios, are performed to illustrate the method’s effectiveness and accuracy. The results obtained are compared with exact solutions and alternative numerical methods, demonstrating improved performance in convergence and computational efficiency.
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来源期刊
CiteScore
6.20
自引率
0.00%
发文量
138
审稿时长
14 weeks
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