L. Le and . Est-une-unité-propre-de-recherche, Il est affilié à l'Institut National des Sciences Appliquées (INSA) et l'Université Paul Sabatier (UPS) de Toulouse, ainsi que l'Université Joseph Fourier (UJF) de Grenoble. Il est qualifié d'Instrument de Recherche et p ermet à tout chercheur ? venant du monde entier ? de réaliser des expériences sous champ intense. Implanté sur deux sites, il offre des champs magnétiques statiques allant jusqu'à 36 Tesla sur son site de Grenoble, et des champs magnétiques pulsés allant jusqu'à 81 Tesla de manière CHAPITRE 10, MODÉLISATION D'AIMANTS RÉSISTIFS À HAUT CHAMP 3.4 Performances Hélice complète Considérons maintenant une hélice complète. L'espace d'approximation élément fini est composé de 5 ? 10 5 degrés de liberté, répartis sur 15 processeurs de type Intel(R) Xeon(R) X5650 à 2.67 GHz. Le nombre maximal d'itérations de Picard est fixé à 20

. Si, des bases EIM prend 2h30. La construction d'un élément de la base réduite nécessite 10 minutes En terme de temps de calcul, nous estimons que l'utilisation de la méthode des bases réduites devient intéressante ? en comparaison avec la méthode des éléments finis ? à partir de 6 évaluations. Cependant, puisque la partie hors-ligne nécessite autant de résolutions FE qu'il y a d'éléments dans la base réduite, l'utilisation de la méthode RB devient intéressante seulement après 10 évaluations. Cela est dû au temps ? non négligeable ? requis par le processus d'assemblage. Il est important de noter que, contrairement au modèle FE pour lequel les matrices sont assemblées à chaque simulation (aucun pré-calcul n'est possible), l'utilisation de la décomposition affine en paramètres par le framework- RBM permet d'assembler les matrices une seule fois au moment de l'étape hors-ligne quel que soit le nombre d'éléments dans la base réduite. Afin d'illustrer nos propos, on se propose de faire le même calcul

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