The quasi-reversibility method for a final value problem of the time-fractional diffusion equation with inhomogeneous source

被引:27
作者
Yang, Fan [1 ]
Ren, Yu-Peng [1 ]
Li, Xiao-Xiao [1 ]
机构
[1] Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
基金
中国国家自然科学基金;
关键词
inhomogeneous source; ill-posed problem; regularization method; time-fractional backward diffusion problem; FINITE-DIFFERENCE APPROXIMATIONS; BOUNDARY VALUE METHOD; ANOMALOUS DIFFUSION; BACKWARD PROBLEM; SPACE; REGULARIZATION;
D O I
10.1002/mma.4705
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
This paper is devoted to discuss a multidimensional backward heat conduction problem for time-fractional diffusion equation with inhomogeneous source. This problem is ill-posed. We use quasi-reversibility regularization method to solve this inverse problem. Moreover, the convergence estimates between regularization solution and the exact solution are obtained under the a priori and the a posteriori choice rules. Finally, the numerical examples for one-dimensional and two-dimensional cases are presented to show that our method is feasible and effective.
引用
收藏
页码:1774 / 1795
页数:22
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