Auswahl der wissenschaftlichen Literatur zum Thema „Reconstruction vectorielle“
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Zeitschriftenartikel zum Thema "Reconstruction vectorielle"
Lopater, J., R. Pessis, A. Benezit, O. Ami, J. F. Uhl, E. A. Cabanis, M. T. Iba-Zizen und V. Delmas. „Morphologie dynamique du muscle levator ani en IRM par reconstruction vectorielle et animation paramétrique“. Morphologie 88, Nr. 281 (Juli 2004): 91. http://dx.doi.org/10.1016/s1286-0115(04)98075-7.
Der volle Inhalt der QuelleDissertationen zum Thema "Reconstruction vectorielle"
Tetelin, Arthur. „Reconstruction des variables vectorielles dans le cadre des méthodes volumes finis sur maillages non-structurés généraux“. Electronic Thesis or Diss., Toulouse, ISAE, 2024. http://www.theses.fr/2024ESAE0029.
Der volle Inhalt der QuelleNumerical simulations in the field of energetics often present sharp gradients or discontinuities, as well as strong disparity of spatial and temporal scales. This is typical of simulations runned with Cedre software, developed by ONERA’s Multi-physics department for energetics. All these features involve the development of accurate, robust and efficient numerical methods. In this framework, variable reconstruction is one of the key aspects of the resolution of hyperbolic conservation laws in finite volume methods. These reconstructions improve the accuracy of the numerical fluxes, which has a direct impact on the spatial accuracy of the scheme. Moreover, it is well known that a linear reconstruction is not sufficient to ensure the scheme stability. Thus, non-linear reconstructions are required. While scalar variables reconstructions have been intensively studied during the last decades, very few studies have been conducted on vectorial variable reconstructions. In industrial codes like Cedre, each component of vectorial variables is usually treated independently as a scalar variable. However, such an approach reveals to be frame-dependent : the solution is dependent on the frame, leading to conservation and accuracy problems on periodical meshes. This thesis therefore focuses on two aspects. Firstly, it aims to study theoretically the accuracy and stability of vectorial reconstructions, and secondly to develop a vectorial reconstruction method designed for the multislope MUSCL scheme, being efficient, accurate and robust. To do so, we introduce limited κ-schemes, allowing to obtain a second-order accurate frame-invariant reconstruction, easily adaptable to any monotone condition chosen. We also introduce fictitious reconstructions, allowing to get a formulation of the scheme highlighting its stability properties. We deduce from it two monotonicity definitions suitable for vectors, that we then run on different numerical test-cases. Lastly, we present a third approach, based on the direct extension of the scalar monotonicity condition to the vectorial case. Even if no stability proof has been written, this approach presents the best compromise between stability and accuracy
Le, Sceller Lois. „Reconstruction globale de champ de vecteurs et applications“. Rouen, 1997. http://www.theses.fr/1997ROUES012.
Der volle Inhalt der QuelleKaaniche, Mounir. „Schémas de lifting vectoriels adaptatifs et applications à la compression d'images stéréoscopiques“. Phd thesis, Télécom ParisTech, 2010. http://pastel.archives-ouvertes.fr/pastel-00631357.
Der volle Inhalt der QuelleAlata, Olivier. „Contributions à la description de signaux, d'images et de volumes par l'approche probabiliste et statistique“. Habilitation à diriger des recherches, Université de Poitiers, 2010. http://tel.archives-ouvertes.fr/tel-00573224.
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