PoPe (Projection on Proper elements) for code control: verification, numerical convergence and reduced models. Application to plasma turbulence simulations

T Cartier-Michaud 1 Philippe Ghendrih 1 Yanick Sarazin 1 J Abiteboul 1 Hugo Bufferand 1 Guilhem Dif-Pradalier 1 Xavier Garbet 1 Virginie Grandgirard 1 Guillaume Latu 1 C Norscini 1 C Passeron 1 Patrick Tamain 1
1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
Abstract : The Projection on Proper elements (PoPe) is a novel method of code control dedicated to 1) checking the correct implementation of models, 2) determining the convergence of numerical methods and 3) characterizing the residual errors of any given solution at very low cost. The basic idea is to establish a bijection between a simulation and a set of equations that generate it. Recovering equations is direct and relies on a statistical measure of the weight of the various operators. This method can be used in any dimensions and any regime, including chaotic ones. This method also provides a procedure to design reduced models and quantify the ratio costs to benefits. PoPe is applied to a kinetic and a fluid code of plasma turbulence.
Keywords : Reduction Method Turbulence Plasma Physics Verification Method
Type de document :
Pré-publication, Document de travail
2015
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Contributeur : Thomas Cartier-Michaud <>
Soumis le : vendredi 30 octobre 2015 - 16:35:04
Dernière modification le : lundi 1 octobre 2018 - 16:03:08
Document(s) archivé(s) le : vendredi 28 avril 2017 - 06:36:34

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  • HAL Id : hal-01222825, version 1
  • ARXIV : 1511.01743

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T Cartier-Michaud, Philippe Ghendrih, Yanick Sarazin, J Abiteboul, Hugo Bufferand, et al.. PoPe (Projection on Proper elements) for code control: verification, numerical convergence and reduced models. Application to plasma turbulence simulations. 2015. 〈hal-01222825〉

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