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Toward guaranteed PGD-reduced models

Abstract : In this paper, a verification approach is introduced to build guaranteed PGD-reduced models for linear elliptic or parabolic problems depending on paramet- ers. It is based on the concept of constitutive relation error and provides for strict bounds on both global error and error on outputs of interest defined with respect to the reference multi-parameter model. It also enables to assess contributions of various error sources, which helps driving adaptive strategies. Consequently, virtual charts associated with quantities of interest and computed from PGD models can satisfy a prescribed accuracy. Numerical experiments on transient thermal conduction illus- trate the proposed verification approach and its performances.
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https://hal.archives-ouvertes.fr/hal-01579916
Contributor : Ludovic Chamoin <>
Submitted on : Thursday, August 31, 2017 - 7:44:38 PM
Last modification on : Thursday, July 2, 2020 - 5:46:03 PM

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  • HAL Id : hal-01579916, version 1

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Pierre Ladevèze, Ludovic Chamoin. Toward guaranteed PGD-reduced models. G. Zavarise and D.P. Boso. Bytes and Science, CIMNE, Barcelona, 2012, 978-84-940243-2-0. ⟨hal-01579916⟩

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