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A Revised Tikhonov Regularization Method for a Cauchy Problem of Two-Dimensional Heat Conduction Equation

机译:二维导热方程柯西问题的修正Tikhonov正则化方法

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摘要

In this paper we investigate a Cauchy problem of two-dimensional (2D) heat conduction equation, which determines the internal surface temperature distribution from measured data at the fixed location. In general, this problem is ill-posed in the sense of Hadamard. We propose a revised Tikhonov regularization method to deal with this ill-posed problem and obtain the convergence estimate between the approximate solution and the exact one by choosing a suitable regularization parameter. A numerical example shows that the proposed method works well.
机译:在本文中,我们研究了二维(2D)导热方程的柯西问题,该方程根据固定位置处的测量数据确定内表面温度分布。通常,从哈达玛的角度来看,这个问题是不恰当的。我们提出了一种修正的Tikhonov正则化方法来处理这一不适定问题,并通过选择合适的正则化参数来获得近似解与精确解之间的收敛估计。数值算例表明,该方法效果良好。

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  • 来源
    《Mathematical Problems in Engineering》 |2018年第6期|1216357.1-1216357.8|共8页
  • 作者

    Liu Songshu; Feng Lixin;

  • 作者单位

    Northeastern Univ Qinhuangdao, Sch Math & Stat, Qinhuangdao 066004, Peoples R China;

    Heilongjiang Univ, Sch Math Sci, Harbin 150080, Heilongjiang, Peoples R China;

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