• Aucun résultat trouvé

Cross-diffusion

Persisting entropy structure for nonlocal cross-diffusion systems

Persisting entropy structure for nonlocal cross-diffusion systems

... • compatibility with the entropy structure; • non-negativeness of the solutions (which is needed for the entropy structure to make sense). A natural temptation to approximate the system (8) is to smooth out the ...

33

Existence of weak solutions to a cross-diffusion Cahn-Hilliard type system

Existence of weak solutions to a cross-diffusion Cahn-Hilliard type system

... Abstract. The aim of this article is to study a Cahn-Hilliard model for a multicomponent mixture with cross-diffusion effects, degenerate mobility and where only one of the species does separate from the ...

34

Convergence of a Finite-Volume Scheme for a Degenerate Cross-Diffusion Model for Ion Transport

Convergence of a Finite-Volume Scheme for a Degenerate Cross-Diffusion Model for Ion Transport

... the diffusion limit another set of differential equations with fluxes depending on the gradients of all species [10, ...nonlinear cross-diffusion terms are common in multicomponent systems [23, ...

34

A finite volume scheme for a Keller-Segel model with additional cross-diffusion

A finite volume scheme for a Keller-Segel model with additional cross-diffusion

... ADDITIONAL CROSS-DIFFUSION MARIANNE BESSEMOULIN-CHATARD AND ANSGAR J ¨ UNGEL ...additional cross-diffusion term in the elliptic equation for the chemical signal is ...

30

A convergent entropy diminishing finite volume scheme for a cross-diffusion system

A convergent entropy diminishing finite volume scheme for a cross-diffusion system

... for cross-diffusion systems, as for instance discontinuous Galerkin schemes in [ 53 ], or finite volumes on staggered cartesian grids for Maxwell-Stefan cross-diffusion in [ 42 ...

27

A finite volume scheme for a seawater intrusion model with cross-diffusion

A finite volume scheme for a seawater intrusion model with cross-diffusion

... 1. Ait Hammou Oulhaj, A.: Numerical analysis of a finite volume scheme for a seawater intrusion model with cross-diffusion in an unconfined aquifer (2017). HAL: hal-01432197, submitted 2. Escher, J., ...

9

Hele-Shaw limit for a system of two reaction-(cross-)diffusion equations for living tissues

Hele-Shaw limit for a system of two reaction-(cross-)diffusion equations for living tissues

... REACTION-(CROSS-)DIFFUSION EQUATIONS FOR LIVING TISSUES FEDERICA BUBBA ⋆ , BENOÎT PERTHAME ⋆ , CAMILLE POUCHOL † , AND MARKUS SCHMIDTCHEN ‡ Abstract. Multiphase mechanical models are now commonly used to ...

32

Entropy diminishing finite volume approximation of a cross-diffusion system

Entropy diminishing finite volume approximation of a cross-diffusion system

... size-exclusion. SIAM J. Math. Anal. 46(6), 2842–2871 (2010) 4. Canc`es, C., Gaudeul, B.: A convergent entropy diminishing finite volume scheme for a cross- diffusion system (2020). HAL:hal-2460299 5. ...

9

Finite Volumes for the Stefan-Maxwell Cross-Diffusion System

Finite Volumes for the Stefan-Maxwell Cross-Diffusion System

... Let us also mention that finite element methods are also used for the simulation of cross-diffusion systems. We refer the reader to [ 27 , 5 , 31 ] for more details. We would like to highlight in particular ...

26

Numerical analysis of a finite volume scheme for a seawater intrusion model with cross-diffusion in an unconfined aquifer

Numerical analysis of a finite volume scheme for a seawater intrusion model with cross-diffusion in an unconfined aquifer

... A SEAWATER INTRUSION MODEL WITH CROSS-DIFFUSION IN AN UNCONFINED AQUIFER AHMED AIT HAMMOU OULHAJ Abstract. We consider a degenerate parabolic system modeling the ow of fresh and saltwater in a porous ...

23

Existence and uniqueness analysis of a non-isothermal cross-diffusion system of Maxwell–Stefan type

Existence and uniqueness analysis of a non-isothermal cross-diffusion system of Maxwell–Stefan type

... 1. Introduction The Maxwell-Stefan diffusion equations provide an accurate description of diffusive phenomena in gaseous mixtures. Despite its wide use in applied contexts (see [13, 11]), the mathematical study of ...

6

Propositional Opinion Diffusion

Propositional Opinion Diffusion

... old model, has been extensively used in recent years in studying diffusion models (see, e.g., [25, 24]). In the linear threshold model each edge in the social network has a non-negative weight attached which ...

10

La politique de diffusion de l'information

La politique de diffusion de l'information

... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...

28

Améliorer la diffusion sur internet

Améliorer la diffusion sur internet

... Introduction L’information scientifique et technique (IST) est l’ensemble des connaissances d’un domaine quelqu’il soit. Pour les sciences de la vie, il regroupe toutes les informations spécifiques de ce domaine. Cette ...

74

Diffusion Brillouin stimulée

Diffusion Brillouin stimulée

... la diffusion Brillouin stimulée, qui présente comme avantage le fait de ne pas requérir de faisceau d’injection, d’être insensible aux inhomogénéités des optiques (rappelons en effet que le retour Brillouin est ...

9

Diffusion du plomb dans la monazite

Diffusion du plomb dans la monazite

... la diffusion des techniques d’analyses in situ (MEB, microsonde électronique, SIMS, ...de diffusion conséquents dans les monazites discordantes, hormis l’exception que constitue l’étude de Suzuki et ...la ...

224

Cross country inequality trends

Cross country inequality trends

... Keywords: Relative Supply of Skills, Returns to Education, Skill-Biased Technical Change, Technology Adoption, Wage Compression, Wage Inequality.. JEL Classification Numbers: ,130.[r] ...

60

[Case studies cross comparison]

[Case studies cross comparison]

... ITAES Newsletter n°3 "Integrated Tools to design and implement Agro Environmental Schemes" This Newsletter 3 deals with a cross-comparison of AESs in the ITAES case-studies. Indeed, the different ...

3

Ville, Recherche, Diffusion : un centre de diffusion pour la « recherche en train de se faire » (1989-2005)

Ville, Recherche, Diffusion : un centre de diffusion pour la « recherche en train de se faire » (1989-2005)

... maquettes de ces rapports. 200 rapports de recherche diffusés par Ville Recherche Diffusion (VRD) sont identifiés dans les fonds de la bibliothèque de Versailles. La trace de l’intérêt pour cette valorisation est ...

7

Controllable Diffusion Curves

Controllable Diffusion Curves

... The proper way to realize such diusion barriers is to rely on the linear system in Section 3.1. As explained before, we can simply omit all aected constraints along the curve. This will break the continuity between ...

20

Show all 3514 documents...

Sujets connexes