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Numerical Solution to the Multi-Term Time Fractional Diffusion Equation in a Finite Domain

Published online by Cambridge University Press:  20 July 2016

Gongsheng Li*
Affiliation:
School of Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
Chunlong Sun*
Affiliation:
School of Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
Xianzheng Jia*
Affiliation:
School of Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
Dianhu Du*
Affiliation:
School of Sciences, Shandong University of Technology, Zibo, Shandong 255049, China
*
*Corresponding author. Email addresses:ligs@sdut.edu.cn (Gongsheng Li), sunchunlong527@163.com (Chunlong Sun), kathy1978@126.com (Xianzheng Jia), dudianhu@126.com (Dianhu Du)
*Corresponding author. Email addresses:ligs@sdut.edu.cn (Gongsheng Li), sunchunlong527@163.com (Chunlong Sun), kathy1978@126.com (Xianzheng Jia), dudianhu@126.com (Dianhu Du)
*Corresponding author. Email addresses:ligs@sdut.edu.cn (Gongsheng Li), sunchunlong527@163.com (Chunlong Sun), kathy1978@126.com (Xianzheng Jia), dudianhu@126.com (Dianhu Du)
*Corresponding author. Email addresses:ligs@sdut.edu.cn (Gongsheng Li), sunchunlong527@163.com (Chunlong Sun), kathy1978@126.com (Xianzheng Jia), dudianhu@126.com (Dianhu Du)

Abstract

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This paper deals with numerical solution to the multi-term time fractional diffusion equation in a finite domain. An implicit finite difference scheme is established based on Caputo's definition to the fractional derivatives, and the upper and lower bounds to the spectral radius of the coefficient matrix of the difference scheme are estimated, with which the unconditional stability and convergence are proved. The numerical results demonstrate the effectiveness of the theoretical analysis, and the method and technique can also be applied to other kinds of time/space fractional diffusion equations.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2016