吉林大学学报(理学版) ›› 2021, Vol. 59 ›› Issue (4): 743-752.

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带有Riemann-Liouville导数的分数阶热传导方程逆源问题的正则化方法

史暖峰1,2, 冯立新1   

  1. 1. 黑龙江大学 数学科学学院, 哈尔滨 150080;
    2. 利沃夫国立理工大学 应用数学与基础科学学院, 乌克兰 利沃夫 79013
  • 收稿日期:2020-12-02 出版日期:2021-07-26 发布日期:2021-07-26
  • 通讯作者: 冯立新 E-mail:fenglixin@hlju.edu.cn

Regularization Method for Inverse Source Problem of Fractional Heat Conduction Equation with Riemann-Liouville Derivative

SHI Nuanfeng1,2, FENG Lixin1   

  1. 1. College of Mathematical Sciences, Heilongjiang University, Harbin 150080, China;
    2. College of Applied Mathematics and Basic Science, Lviv Polytechnic National University, Lviv 79013, Ukraine
  • Received:2020-12-02 Online:2021-07-26 Published:2021-07-26

摘要: 首先, 用Tikhonov正则化方法求解带有Riemann-Liouville导数的分数阶热传导方程逆源问题, 得到了包含Mittag-Leffler函数的正则解; 其次, 对正则解进行收敛性分析, 给出先验参数选取下正则解和精确解的误差估计及后验参数选取下正则化参数的取值范围. 数值实验结果表明了该正则化方法的有效性.

关键词: 分数阶热传导方程, 逆源问题, Mittag-Leffler函数, 正则化方法, 误差估计

Abstract: Firstly, by using Tikhonov regularization method to solve the inverse source problem of the fractional heat conduction equation with Riemann-Liouville derivative, we obtained a regularization solution with Mittag-Leffler function. Secondly, we analyzed the convergence of the regularization solution, gave the error estimate of the regularization and exact solutions under a priori parameter choice rule, and the range of regularization parameter under a posterior parameter choice rule. The numerical experiment results show the effectiveness of proposed regularization method.

Key words: fractional heat conduction equation, inverse source problem, Mittag-Leffler function, regularization method, error estimate

中图分类号: 

  • O175.25