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arXiv · 1609.05682

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

Laurent Bourgeois·Jérémi Dardé
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Abstract

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.

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Laurent Bourgeois, Jérémi Dardé. 2016-09-19. The "exterior approach" applied to the inverse obstacle problem for the heat equation. https://doi.org/10.1137/16m1093872

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