Littérature scientifique sur le sujet « A posteriori local VF correction »
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Articles de revues sur le sujet "A posteriori local VF correction"
Téllez-Quiñones, Alejandro, Juan C. Valdiviezo-N, Adán Salazar-Garibay, Hugo Carlos-Martínez et Jesús A. Monroy-Anieva. « Phase-unwrapping method based on local polynomial models and a maximum a posteriori model correction ». Applied Optics 60, no 5 (2 février 2021) : 1121. http://dx.doi.org/10.1364/ao.411238.
Texte intégralJiang, Xiaoliang, Bailin Li, Qiang Wang et Jiajia Liu. « Active Contour Driven by Local Region Statistics and Maximum A Posteriori Probability for Medical Image Segmentation ». Mathematical Problems in Engineering 2014 (2014) : 1–8. http://dx.doi.org/10.1155/2014/182415.
Texte intégralHaidar, Ali, Fabien Marche et Francois Vilar. « A posteriori Finite-Volume local subcell correction of high-order discontinuous Galerkin schemes for the nonlinear shallow-water equations ». Journal of Computational Physics 452 (mars 2022) : 110902. http://dx.doi.org/10.1016/j.jcp.2021.110902.
Texte intégralProinov, Petko D., et Maria T. Vasileva. « Local and Semilocal Convergence of Nourein’s Iterative Method for Finding All Zeros of a Polynomial Simultaneously ». Symmetry 12, no 11 (30 octobre 2020) : 1801. http://dx.doi.org/10.3390/sym12111801.
Texte intégralTASKINOGLU, EZGI S., et JOSETTE BELLAN. « A posteriori study using a DNS database describing fluid disintegration and binary-species mixing under supercritical pressure : heptane and nitrogen ». Journal of Fluid Mechanics 645 (9 février 2010) : 211–54. http://dx.doi.org/10.1017/s0022112009992606.
Texte intégralSepúlveda, E., M. Schneider, F. Hase, S. Barthlott, D. Dubravica, O. E. García, A. Gomez-Pelaez et al. « Tropospheric CH<sub>4</sub> ; signals as observed by NDACC FTIR at globally distributed sites and comparison to GAW surface in situ measurements ». Atmospheric Measurement Techniques 7, no 7 (31 juillet 2014) : 2337–60. http://dx.doi.org/10.5194/amt-7-2337-2014.
Texte intégralSepúlveda, E., M. Schneider, F. Hase, S. Barthlott, D. Dubravica, O. E. García, A. Gomez-Pelaez et al. « Tropospheric CH<sub>4</sub> ; signals as observed by NDACC FTIR at globally distributed sites and comparison to GAW surface in-situ measurements ». Atmospheric Measurement Techniques Discussions 7, no 1 (27 janvier 2014) : 633–701. http://dx.doi.org/10.5194/amtd-7-633-2014.
Texte intégralNesme, Nicolas, Rodolphe Marion, Olivier Lezeaux, Stéphanie Doz, Claude Camy-Peyret et Pierre-Yves Foucher. « Joint Use of in-Scene Background Radiance Estimation and Optimal Estimation Methods for Quantifying Methane Emissions Using PRISMA Hyperspectral Satellite Data : Application to the Korpezhe Industrial Site ». Remote Sensing 13, no 24 (8 décembre 2021) : 4992. http://dx.doi.org/10.3390/rs13244992.
Texte intégralOettinger, Marcel, Tim Kluge et Joerg Seume. « Influence of honeycomb structures on labyrinth seal aerodynamics ». Journal of the Global Power and Propulsion Society 6 (19 octobre 2022) : 290–303. http://dx.doi.org/10.33737/jgpps/152697.
Texte intégralBroberg, Danny, Kyle Bystrom, Shivani Srivastava, Diana Dahliah, Benjamin A. D. Williamson, Leigh Weston, David O. Scanlon et al. « High-throughput calculations of charged point defect properties with semi-local density functional theory—performance benchmarks for materials screening applications ». npj Computational Materials 9, no 1 (4 mai 2023). http://dx.doi.org/10.1038/s41524-023-01015-6.
Texte intégralThèses sur le sujet "A posteriori local VF correction"
Haidar, Ali. « Numerical simulation of nonlinear shallow-water interactions between surface waves and a floating structure ». Electronic Thesis or Diss., Université de Montpellier (2022-....), 2022. https://ged.scdi-montpellier.fr/florabium/jsp/nnt.jsp?nnt=2022UMONS093.
Texte intégralIn this Ph.D., we investigate two main research problems: (i) the design of stabilization patches for higher-order discontinuous-Galerkin (DG) methods applied to highly nonlinear free-surface shallow-water flows, (ii) the construction of a new numerical approximation strategy for the simulation of nonlinear interactions between waves in a free-surface shallow flow and a partly immersed floating object. The stabilization methods developed in the first research line are used in the second part of this work.High-order discontinuous-Galerkin (DG) methods generally suffer from a lack of nonlinear stability in the presence of singularities in the solution. Such singularities may be of various kinds, involving discontinuities, rapidly varying gradients or the occurence of dry areas in the particular case of free-surface flows. In the first part of this work, we introduce two new stabilization methods based on the use of Finite-Volume Subcells in order to alleviate these robustness issues. The first method relies on an a priori limitation of the DG scheme, together with the use of a TVB slope-limiter and a PL. The second one is built upon an a posteriori correction strategy, allowing to surgically detect the incriminated local subcells, together with the robustness properties of the corresponding lowest-order Finite-Volume scheme. This last strategy allows to ensure the nonlinear stability of the DG scheme in the vicinity of discontinuities, as well as the positivity of the discrete water-height, while preserving the subcell resolution of the initial scheme. This second strategy is also preliminary investigated in the two dimensional horizontal case. An extensive set of test-cases assess the validity of this approach.In the second part, we introduce a new numerical strategy designed for the modeling and simulation of nonlinear interactions between surface waves in shallow-water and a partially immersed surface piercing object. At the continuous level, the flow located in the textit{exterior} domain is globally modeled with the nonlinear hyperbolic shallow-water equations, while the description of the flow beneath the object reduces to a nonlinear ordinary differential equation. The coupling between the flow and the object is formulated as a free-boundary problem, associated with the computation of the time evolution of the spatial locations of the air-water-body interface. At the discrete level, the proposed formulation relies on an arbitrary-order discontinuous Galerkin approximation, which is stabilized with the a posteriori Local Subcell Correction method through low-order finite volume scheme introduced in the first part. The time evolution of the air-water-body interface is computed from an Arbitrary-Lagrangian-Eulerian (ALE) description and a suitable smooth mapping between the original frame and the current configuration. For any order of polynomial approximation, the resulting algorithm is shown to: (1) preserves the Discrete Geometric Conservation Law, (2) ensures the preservation of the water-height positivity at the subcell level, (3) preserves the class of motionless steady states (well-balancing), possibly with the occurrence of a partially immersed object.Several numerical computations and test-cases are presented, highlighting that the proposed numerical model(1) effectively allows to model all types of wave / object interactions, (2) efficiently provides the time-evolution of the air-water-body contact points and accordingly redefine the new mesh-grid thanks to ALE method (3) accurately handles strong flow singularities without any robustness issues, (4) retains the highly accurate subcell resolution of discontinuous Galerkin schemes
Barbié, Laureline. « Raffinement de maillage multi-grille local en vue de la simulation 3D du combustible nucléaire des Réacteurs à Eau sous Pression ». Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4742.
Texte intégralThe aim of this study is to improve the performances, in terms of memory space and computational time, of the current modelling of the Pellet-Cladding mechanical Interaction (PCI),complex phenomenon which may occurs during high power rises in pressurised water reactors. Among the mesh refinement methods - methods dedicated to efficiently treat local singularities - a local multi-grid approach was selected because it enables the use of a black-box solver while dealing few degrees of freedom at each level. The Local Defect Correction (LDC) method, well suited to a finite element discretisation, was first analysed and checked in linear elasticity, on configurations resulting from the PCI, since its use in solid mechanics is little widespread. Various strategies concerning the implementation of the multilevel algorithm were also compared. Coupling the LDC method with the Zienkiewicz-Zhu a posteriori error estimator in orderto automatically detect the zones to be refined, was then tested. Performances obtained on two-dimensional and three-dimensional cases are very satisfactory, since the algorithm proposed is more efficient than h-adaptive refinement methods. Lastly, the LDC algorithm was extended to nonlinear mechanics. Space/time refinement as well as transmission of the initial conditions during the remeshing step were looked at. The first results obtained are encouraging and show the interest of using the LDC method for PCI modelling
Barbié, Lauréline. « Raffinement de maillage multi-grille local en vue de la simulation 3D du combustible nucléaire des Réacteurs à Eau sous Pression ». Phd thesis, Aix-Marseille Université, 2013. http://tel.archives-ouvertes.fr/tel-00926550.
Texte intégralChapitres de livres sur le sujet "A posteriori local VF correction"
Galisot, Gaetan, Thierry Brouard et Jean-Yves Ramel. « Local Probabilistic Atlases and a Posteriori Correction for the Segmentation of Heart Images ». Dans Lecture Notes in Computer Science, 207–14. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75541-0_22.
Texte intégralActes de conférences sur le sujet "A posteriori local VF correction"
Ling Hou, Oscar Au, Xiaopeng Fan et Jiantao Zhou. « Maximum-likelihood versus maximum a posteriori based local illumination and color correction algorithm for multi-view video ». Dans 2009 IEEE International Workshop on Multimedia Signal Processing (MMSP). IEEE, 2009. http://dx.doi.org/10.1109/mmsp.2009.5293307.
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