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Numerical analysis of an energy-like minimization method to solve a parabolic Cauchy problem with noisy data
Romain Rischette 1, Thouraya Baranger 1, Naima Debit 2
(08/04/2011)

This paper is concerned with solving Cauchy problem for parabolic equation by minimizing an energy-like error functional and by taking into account noisy Cauchy data. After giving some fundamental results, numerical convergence analysis of the energy-like minimization method is carried out and leads to an adapted stopping criteria depending on noise rate for the minimization process. Numerical experiments are performed and confirm theoretical convergence order and the good behavior of the minimization process.
1 :  Laboratoire de Mécanique des Contacts et des Structures (LaMCoS)
CNRS : UMR5259 – Institut National des Sciences Appliquées (INSA) - Lyon
2 :  Institut Camille Jordan (ICJ)
CNRS : UMR5208 – Université Claude Bernard - Lyon I – Ecole Centrale de Lyon – Institut National des Sciences Appliquées (INSA) - Lyon
Mathématiques/Analyse numérique

Physique/Mécanique/Thermique

Sciences de l'ingénieur/Mécanique/Thermique
Inverse problem – Ill-posed problem – Cauchy problem – Data completion – Boundary condition identification – Finite element – Noise – A priori error estimates
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