Academic literature on the topic 'Calibration de conditions aux limites'
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Journal articles on the topic "Calibration de conditions aux limites"
Despréaux, Stéphane, and Patrick Witomski. "Problème de capillarité avec conditions aux limites mixtes." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 329, no. 4 (August 1999): 343–46. http://dx.doi.org/10.1016/s0764-4442(00)88579-1.
Full textKourta, Azeddine, and Renaud Sauvage. "Conditions aux limites absorbantes sur des frontières libres." Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics 329, no. 12 (December 2001): 857–64. http://dx.doi.org/10.1016/s1620-7742(01)01411-8.
Full textFivel, M. C., and G. Canova. "Simulations 3D de dislocations en conditions aux limites complexes." Le Journal de Physique IV 08, PR4 (June 1998): Pr4–249—Pr4–258. http://dx.doi.org/10.1051/jp4:1998431.
Full textAmmari, Habib, and Chiraz Latiri-Grouz. "Conditions aux limites approchées pour les couches minces périodiques." ESAIM: Mathematical Modelling and Numerical Analysis 33, no. 4 (July 1999): 673–92. http://dx.doi.org/10.1051/m2an:1999157.
Full textBoulanouar, Mohamed. "Le transport neutronique avec des conditions aux limites générales." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 329, no. 2 (July 1999): 121–24. http://dx.doi.org/10.1016/s0764-4442(99)80474-1.
Full textRahmani, Leila. "Conditions aux limites approchées pour une plaque mince non linéaire." Comptes Rendus Mathematique 343, no. 1 (July 2006): 57–62. http://dx.doi.org/10.1016/j.crma.2006.04.013.
Full textBoulanouar, Mohamed. "Le transport neutronique avec des conditions aux limites générales (II)." Comptes Rendus Mathematique 350, no. 5-6 (March 2012): 329–32. http://dx.doi.org/10.1016/j.crma.2012.02.007.
Full textLipietz, Alain. "Les conditions aux limites des politiques d'industrialisation dans le Tiers Monde." Tiers-Monde 29, no. 115 (1988): 1021–28. http://dx.doi.org/10.3406/tiers.1988.3735.
Full textBostan, Mihai, and Frédéric Poupaud. "Solutions périodiques du système de Vlasov-Poisson avec conditions aux limites." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 325, no. 12 (December 1997): 1333–36. http://dx.doi.org/10.1016/s0764-4442(97)82365-8.
Full textDegiovanni, A., and J. C. Batsale. "A propos des conditions aux limites de 4ème et 5ème espèces." International Journal of Heat and Mass Transfer 37, no. 5 (March 1994): 877–81. http://dx.doi.org/10.1016/0017-9310(94)90123-6.
Full textDissertations / Theses on the topic "Calibration de conditions aux limites"
Villanueva, Lucas. "Développement d’outils d’assimilation de données pour l’estimation augmentée d’écoulements internes." Electronic Thesis or Diss., Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2024. http://www.theses.fr/2024ESMA0019.
Full textIn this thesis, data assimilation tools are used to increase the performance of fluid mechanics solvers dedicated to large eddy simulations. The aim is to improve the prediction and study of marginal events harmful to the integrity of physical systems. Although difficult to characterize and model, a detailed understanding of these complex physical phenomena is essential for the development of more sustainable applications. These objectives are in line with the research activities of the ANR ALEKCIA project, of which this thesis is a part. More specifically, the aim is to meet the need to couple numerical fluid mechanics calculations with a sequential data assimilation algorithm. CONES (Coupling OpenFOAM with Numerical EnvironmentS) tool has been developed to provide an answer to this need by using the OpenFOAM software and the ensemble Kalman filter. The latter can be used both to calibrate the physical parameters of the numerical simulation and to infer physical fields, such as the velocity field. CONES is used to infer three case studies of increasing complexity. The first optimizes the closure coefficients of RANS-type turbulence models for an incompressible flow by assimilating experimental data. The calibration of these parameters leads in particular to a topological improvement in the recirculation structures of the geometry. The case also demonstrates the importance of the quality of the heterogeneous source of information observed rather than its quantity. In a second study, large eddy simulation is used to provide a prediction of the unsteady three-dimensional characteristics of a turbulent incompressible flow in a channel. In addition to optimizing the Smagorinsky model, the velocity field is partially synchronized with the observed data to facilitate the reconstruction of the unsteady structures. The influence of hyper parameters such as inflation is highlighted. Finally, a variant of the Kalman algorithm, the hyper-localized ensemble Kalman filter, is developed for the last case study. In particular, this method reduces the computational cost.It is used to infer a LES of the compressible flow of a simplified engine geometry. The pulsed reference input condition is correctly calibrated and the velocity field of the inferred simulations is locally synchronized. The correction provided by the algorithm also shows an improvement in the energy distribution of the inferred region in line with the reference distribution. In conclusion, the potential of the ensemble Kalman filter for calibrating physical parameters and reconstructing local structures by observing high-fidelity data from the real system has been demonstrated. This could enable the study of extreme events that could damage the integrity of the physical system, thanks to the augmented numerical simulation of these phenomena
Gonzalez, Thierry. "Contributions aux conditions d'interface et conditions aux limites pour le systeme d'equations euler compressible." Paris 6, 2000. http://www.theses.fr/2000PA066512.
Full textBrouillat, Sébastien. "Conditions aux limites absorbantes d'ordre élevé en électromagnétisme." Bordeaux 1, 1996. http://www.theses.fr/1996BOR10608.
Full textEl, Ouaraini Rachida. "Sensibilité des assimilations d'ensemble globales et régionales aux conditions initialites et aux conditions limites latérales." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/15999/1/ElOuaraini.pdf.
Full textUzan, Jean-Philippe. "Defauts topologiques et conditions aux limites en cosmologie primordiale." Paris 11, 1998. http://www.theses.fr/1998PA112143.
Full textSesques, Muriel. "Conditions aux limites artificielles pour le système de Maxwell." Bordeaux 1, 1990. http://www.theses.fr/1990BOR10606.
Full textBergeret, Pascale. "Systèmes de lois de conservation, effets non linéaires des conditions aux limites : traitement numérique des conditions aux limites et des jonctions dans un réseau de pipelines." Lyon 1, 1995. http://www.theses.fr/1995LYO10004.
Full textMachrouki, Hicham. "Incompressibilité et conditions aux limites dans la méthode Smoothed particle hydrodynamics." Poitiers, 2012. http://theses.univ-poitiers.fr/25282/2012-Machrouki-Hicham-These.pdf.
Full textA numerical particle method for solving the Bavier-Stokes equations in velocity-pressure formulation for two dimensional incompressible flows is presented. The basis of the method is the Smoothed particle hydrodynamics (SPH) formulation for the moment transport. On advantage of this meshless method is an easy treatment of computational domains with complex boundaries. The pressure is computed by solving a poisson equation that ensures the flow incompressibility and the boundary conditions are imposed by using a boundary integral method (BIM). This last method, is known to be strongly CPU time consuming. To overcome this difficulty, the source term of the poisson equation was solved by introducing a cartesian grid and by using finite differences. The same treatment has been applied to the generalize Helmholtz equation for the velocity field as well. The different steps were validated by studying several academic cases including a driven cavity low, a dam break and an impulsively started flow around a circular cylinder. Aditionaly to this standard use for flow numerical modelling, the method was also applied for rebuilding the pressure and velocity fields from velocity fields experimentally measured by a PIV method. The method was then applied to the flow around a moving NACA profile
TAJCHMAN, MARC. "Conditions aux limites absorbantes pour des fluides viscoélastiques de type différentiel." Paris 11, 1994. http://www.theses.fr/1994PA112100.
Full textBarucq, Hélène. "Etude asymptotique du système de Maxwell avec conditions aux limites absorbantes." Bordeaux 1, 1993. http://www.theses.fr/1993BOR10620.
Full textBooks on the topic "Calibration de conditions aux limites"
Yahya, Rahmat-Samii, ed. Impedance boundary conditions in electromagnetics. Washington, DC: Taylor & Francis, 1995.
Find full textSurface Impedence Boundary Conditions. CRC, 2008.
Find full textYuferev, Sergey V. Surface Impedance Boundary Conditions: A Comprehensive Approach. Taylor & Francis Group, 2010.
Find full textIda, Nathan, and Sergey V. Yuferev. Surface Impedance Boundary Conditions: A Comprehensive Approach. Taylor & Francis Group, 2018.
Find full textIda, Nathan, and Sergey V. Yuferev. Surface Impedance Boundary Conditions: A Comprehensive Approach. Taylor & Francis Group, 2018.
Find full textIda, Nathan, and Sergey V. Yuferev. Surface Impedance Boundary Conditions: A Comprehensive Approach. Taylor & Francis Group, 2018.
Find full textBook chapters on the topic "Calibration de conditions aux limites"
"Conditions aux limites de Dirichlet par pénalisation - Couches limites." In Eléments d’analyse pour l’étude de quelques modèles d’écoulements de fluides visqueux incompressibles, 263–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-29819-3_6.
Full text"Conditions aux limites en sortie d’un écoulement." In Eléments d’analyse pour l’étude de quelques modèles d’écoulements de fluides visqueux incompressibles, 245–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-29819-3_5.
Full text"Chapitre 12 Problèmes à conditions aux limites et problèmes aux valeurs propres." In Méthodes numériques appliquées, 281–300. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0990-5-013.
Full text"Chapitre 12 Problèmes à conditions aux limites et problèmes aux valeurs propres." In Méthodes numériques appliquées, 281–300. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0990-5.c013.
Full textBEN-AHMED, Sabrina, Jean-Noël ALBERTINI, Jean-Pierre FAVRE, C. Alberto FIGUEROA, Eugenio ROSSET, Francesca CONDEMI, and Stéphane AVRIL. "Simulations numériques de l’impact hémodynamique des interventions endovasculaires complexes." In Écoulements biologiques dans les grands vaisseaux, 45–70. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9065.ch2.
Full textBosseur, F., and P. Orenga. "Determination de Conditions Aux Limites En Mer Ouverte Par Une Methode de Controle Optimal." In Nonlinear Partial Differential Equations and their Applications - Collège de France Seminar Volume XIV, 103–32. Elsevier, 2002. http://dx.doi.org/10.1016/s0168-2024(02)80007-8.
Full text"Deuxième partie : Enseigner et apprendre à l’ère du COVID-19 : Enjeux, défis et opportunités." In Les écoles africaines à l’ère du COVID-19, 187–90. Editions des archives contemporaines, 2024. http://dx.doi.org/10.17184/eac.7928.
Full text"Première partie : Les écoles africaines face à la crise : Dispositif, résilience et management." In Les écoles africaines à l’ère du COVID-19, 101–4. Editions des archives contemporaines, 2024. http://dx.doi.org/10.17184/eac.7917.
Full textConference papers on the topic "Calibration de conditions aux limites"
Sanchez, Martin. "Conditions aux limites liées à la réflexion de la houle et distribution des énergies dans un bassin portuaire." In Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 1996. http://dx.doi.org/10.5150/jngcgc.1996.004-s.
Full textDegorce, T. "Le défaut osseux antérieur : un défi esthétique et chirurgical." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206601002.
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