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Boundary element–minimal error method for the Cauchy problem associated with Helmholtz-type equations

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Abstract

An iterative procedure, namely the minimal error method, for solving stably the Cauchy problem associated with Helmholtz-type equations is introduced and investigated in this paper. This method is compared with another two iterative algorithms previously proposed by Marin et al. (Comput Mech 31:367–377, 2003; Eng Anal Bound Elem 28:1025–1034, 2004), i.e. the conjugate gradient and Landweber–Fridman methods, respectively. The inverse problem analysed in this study is regularized by providing an efficient stopping criterion that ceases the iterative process in order to retrieve stable numerical solutions. The numerical implementation of the aforementioned iterative algorithms is realized by employing the boundary element method for both two-dimensional Helmholtz and modified Helmholtz equations.

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Authors and Affiliations

  1. Institute of Solid Mechanics, Romanian Academy, 15 Constantin Mille, Sector 1, P.O. Box 1-863, 010141, Bucharest, Romania

    Liviu Marin

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  1. Liviu Marin
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Correspondence to Liviu Marin.

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Marin, L. Boundary element–minimal error method for the Cauchy problem associated with Helmholtz-type equations. Comput Mech 44, 205–219 (2009). https://doi.org/10.1007/s00466-009-0368-5

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  • DOI: https://doi.org/10.1007/s00466-009-0368-5

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