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arXiv 1609.05682math.APmath.OC
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“外部法”在heat equation障碍物反问题中的应用

The "exterior approach" applied to the inverse obstacle problem for the heat equation

Laurent Bourgeois, Jérémi Dardé

摘要:

本文考虑用“外点法”求解热传导方程的障碍反问题。这种迭代方法是基于一个准可逆性的方法来计算的解决方案,从柯西数据,而一个简单的水平集方法被用来表征的障碍。我们提出了几个混合配方的准可逆性,使我们能够使用一些经典的协调有限元。其中,一个迭代公式,考虑到噪声柯西数据在一个弱的方式被选择在一些数值实验中,并显示我们的识别策略的可行性。

英文摘要:

In this paper we consider the " exterior approach " to solve the inverse obstacle problem for the heat equation. This iterated approach is based on a quasi-reversibility method to compute the solution from the Cauchy data while a simple level set method is used to characterize the obstacle. We present several mixed formulations of quasi-reversibility that enable us to use some classical conforming finite elements. Among these, an iterated formulation that takes the noisy Cauchy data into account in a weak way is selected to serve in some numerical experiments and show the feasibility of our strategy of identification.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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