Inverse problem of time-dependent heat sources numerical reconstruction

Inverse problem of time-dependent heat sources numerical reconstruction
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随时间变化的热源数值重构反问题

DOI:
10.1016/j.matcom.2011.01.001
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发表时间:
2011-04
影响因子:
4.6
通讯作者:
Luo, Guan-Wei
Luo, Guan-Wei
中科院分区:
数学3区
文献类型:
--
作者:
Yang, Liu;Dehghan, Mehdi;Yu, Jian-Ning;Luo, Guan-Wei

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这项工作研究了使用内部点指定的温度测量重建热传导方程中与时间相关的热源的反问题。此类问题在应用科学的多个领域都有重要的应用。通过格林函数方法,反问题被简化为已知不适定的第一类算子方程。反问题解的唯一性是通过收缩映射原理得到的。设计了一种基于Landweber迭代的数值算法来处理算子方程,并进行了一些典型的数值实验。数值结果表明,该方法稳定,未知热源回收效果很好。
This work studies the inverse problem of reconstructing a time-dependent heat source in the heat conduction equation using the temperature measurement specified at an internal point. Problems of this type have important applications in several fields of applied science. By the Green’s function method, the inverse problem is reduced to an operator equation of the first kind which is known to be ill-posed. The uniqueness of the solution for the inverse problem is obtained by the contraction mapping principle. A numerical algorithm on the basis of the Landweber iteration is designed to deal with the operator equation and some typical numerical experiments are also performed in the paper. The numerical results show that the proposed method is stable and the unknown heat source is recovered very well.
DOI: 10.1016/j.amc.2008.03.014
发表时间: 2012-12
期刊: Appl. Math. Comput.
影响因子: --
作者:
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DOI: 10.1016/0022-247x(90)90414-b
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影响因子: 1.3
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DOI: 10.1017/cbo9781139086967.004
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DOI: 10.1016/s0035-3159(98)80041-x
发表时间: 1998-09
期刊: Revue Générale de Thermique
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作者:
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通讯作者: C. Niliot;P. Gallet