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Approximation Cinetique Discrete De Problemes De Lois De Conservation Avec Bord
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Book Synopsis Approximation cinétique discrète de problèmes de lois de conservation avec bord by : Vuk Milišić
Download or read book Approximation cinétique discrète de problèmes de lois de conservation avec bord written by Vuk Milišić and published by . This book was released on 2001 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nous étudions l'approximation cinétique discrète de lois de conservation scalaires quasi-linéaires dans le quart d'espace positif. Cette approximation est obtenue par l'introduction de systèmes de type BGK relaxant la loi scalaire. Nous démontrons la convergence des systèmes semi-linéaires vers la loi scalaire. Nous discrétisons ces modèles pour obtenir une gamme de schémas numériques adaptés au problème avec bord. Dans une troisième partie, nous appliquons ces schémas à un certain nombre de cas test numériques.
Book Synopsis ESTIMATION D'ERREUR POUR LES LOIS DE CONSERVATION SCALAIRES A L'AIDE D'APPROCHES CINETIQUES, ET ETUDE DU CAS DE CONDITIONS AUX LIMITES by : ABDENNEBI.. OMRANE
Download or read book ESTIMATION D'ERREUR POUR LES LOIS DE CONSERVATION SCALAIRES A L'AIDE D'APPROCHES CINETIQUES, ET ETUDE DU CAS DE CONDITIONS AUX LIMITES written by ABDENNEBI.. OMRANE and published by . This book was released on 1998 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE PORTE SUR LES APPROCHES CINETIQUES POUR LES LOIS DE CONSERVATION SCALAIRES MULTIDIMENSIONNELLES. ON APPLIQUE LA METHODE DE TRANSPORT-ECROULEMENT DE Y. BRENIER, (AUSSI T. MIYAKAWA ET Y. GIGA), ET D'UNE DEUXIEME METHODE CINETIQUE FORMULEE PAR LE MODELE DE B. PERTHAME ET E. TADMOR. DEJA DES RESULTATS DE CONVERGENCE ONT ETE OBTENUS PAR CES AUTEURS. ICI. ON CALCULE AVEC EXACTITUDE L'ERREUR DE CONVERGENCE ENTRE LA SOLUTION ENTROPIQUE DE LA LOI CONSERVATIVE ET LA SOLUTION APPROCHEE FOURNIE PAR CHAQUE MODELE CINETIQUE. POUR SE FAIRE, ON UTILISE LA METHODE ENTROPIQUE DE DE S. N. KRUZKOV ET N. N. KUZNETSOV. CETTE TECHNIQUE SE TROUVE AINSI GENERALISEE AUX DEUX METHODES CINETIQUES. L'ERREUR DE CONVERGENCE OBTENUE EST EN T POUR LA PREMIERE METHODE DE TRANSPORT-ECROULEMENT (OU T REPRESENTE LE PAS DE TEMPS LE LONG DE CHAQUE PHASE DE TRANSPORT), ET ELLE EST DE ( ETANT LA DISTANCE MOYENNE ENTRE DEUX COLLISIONS DE PARTICULES) POUR CE QUI EST DU MODELE DE PERTHAME-TADMOR. L'ESTIMATION D'ERREUR, GLOBALE EN TEMPS, EST OBTENUE DANS L'ESPACE L#1(R#N#X) ; CE QUI EST OPTIMAL, COMPTE TENU DE L'UTILISATION DE LA METHODE DE KUZNETSOV. LA DEUXIEME PARTIE DE CETTE THESE CONCERNE LES CONDITIONS AUX BORDS POUR LES LOIS DE CONSERVATION SCALAIRES MULTIDIMENSIONNELLES DANS LE DEMI-ESPACE, A PARTIR D'UN MODELE CINETIQUE DE PERTHAME-TADMOR. ON MONTRE D'ABORD QUE CE MODELE EST BIEN POSE DANS L'ESPACE L#(0,T ; L#1(R#+ X R#N#-#1 X R#V)), DES ESTIMATIONS BV, ET UNE INEGALITE D'ENTROPIE APPROCHEE. SOUS UNE HYPOTHESE SUPPLEMENTAIRE, ON OBTIENT DES CONDITIONS AUX BORDS POUR LA SOLUTION ENTROPIQUE. SOUS CETTE MEME HYPOTHESE ET DANS LE CAS D'UNE DONNEE MAXWELLIENNE, L'ENSEMBLE DES CONDITIONS AUX BORD ADMISSIBLES EST INCLU DANS L'ENSEMBLE DES CONDITIONS DE BORD DE C. BARDOS, A. Y. LEROUX, ET J. C. NEDELEC OBTENU A PARTIR DE PROFILS VISQUEX. POURTANT LES DEUX PROBLEMES DE CAUCHY AVEC CONDITIONS AU BORD SONT EQUIVALENTS.
Book Synopsis Convexité en analyse numérique des lois de conservation hyperboliques non-linéaires by : Lucilla Corrias
Download or read book Convexité en analyse numérique des lois de conservation hyperboliques non-linéaires written by Lucilla Corrias and published by . This book was released on 1995 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE COMPORTE TROIS PARTIES INDEPENDANTES. DANS LA PREMIERE PARTIE ON S'INTERESSE A L'APPROXIMATION NUMERIQUE DE LA SOLUTION ENTROPIQUE D'UNE LOI DE CONSERVATION. ON PROPOSE L'ETUDE D'UNE NOUVELLE CLASSE DE SCHEMAS NUMERIQUES PROVENANT DES METHODES D'APPROXIMATION DES EQUATIONS D'HAMILTON-JACOBI-BELLMAN. ON OBTIENT AINSI UNE CLASSE DE SCHEMAS NUMERIQUES QUI SONT NON-CONSERVATIFS, MAIS POUR LEQUELS ON ETABLIT UN THEOREME GENERAL DE CONVERGENCE VERS LA SOLUTION ENTROPIQUE. DANS LA DEUXIEME PARTIE ON ETUDIE LA SOLUTION MULTIVOQUE D'UNE LOI DE CONSERVATION. GRACE A LA METHODE DES CARACTERISTIQUES, CETTE ETUDE EST EQUIVALENTE A L'ETUDE D'UNE EQUATION DE TRANSPORT LIBRE QUE L'ON CHERCHE A RESOUDRE EN RESOLVANT UN SYSTEME FERME D'EQUATIONS DES MOMENTS ASSOCIES. C'EST AINSI QU'ON EST CONDUIT NATURELLEMENT, D'UNE PART A LA CONSTRUCTION D'UN MODELE CINETIQUE PAR UN PRINCIPE DE MINIMISATION D'ENTROPIE ET, D'AUTRE PART A LA NOTION DE SOLUTIONS ENTROPIQUES A AU PLUS K BRANCHES COMME SOLUTIONS DU MODELE CINETIQUE. UN DES RESULTATS QUE NOUS OBTENONS EST L'EXISTENCE DE CES SOLUTIONS. DANS LA TROISIEME PARTIE NOUS ETUDIONS UN ALGORITHME RAPIDE POUR LE CALCUL DE LA TRANSFORMEE DE LEGENDRE-FENCHEL DISCRETE D'UNE FONCTION REELLE. NOUS MONTRONS QUE L'ALGORITHME CONVERGE ET QUE L'ORDRE DE CONVERGENCE CROIT AVEC LA REGULARITE DE LA FONCTION TRANSFORMEE. NOUS PRESENTONS DES APPLICATIONS DE CET ALGORITHME AUX EQUATIONS D'HAMILTON-JACOBI POUR LES PROBLEMES DE PROPAGATION DE FLAMME ET AUX LOIS DE CONSERVATION
Book Synopsis The General Theory of Homogenization by : Luc Tartar
Download or read book The General Theory of Homogenization written by Luc Tartar and published by Springer Science & Business Media. This book was released on 2009-12-03 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Homogenization is not about periodicity, or Gamma-convergence, but about understanding which effective equations to use at macroscopic level, knowing which partial differential equations govern mesoscopic levels, without using probabilities (which destroy physical reality); instead, one uses various topologies of weak type, the G-convergence of Sergio Spagnolo, the H-convergence of François Murat and the author, and some responsible for the appearance of nonlocal effects, which many theories in continuum mechanics or physics guessed wrongly. For a better understanding of 20th century science, new mathematical tools must be introduced, like the author’s H-measures, variants by Patrick Gérard, and others yet to be discovered.
Book Synopsis Advances in Mathematical Fluid Mechanics by : Josef Malek
Download or read book Advances in Mathematical Fluid Mechanics written by Josef Malek and published by Springer. This book was released on 2000-10-04 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of six survey contributions that are focused on several open problems of theoretical fluid mechanics both for incompressible and compressible fluids. The first article "Viscous flows in Besov spaces" by M area Cannone ad dresses the problem of global existence of a uniquely defined solution to the three-dimensional Navier-Stokes equations for incompressible fluids. Among others the following topics are intensively treated in this contribution: (i) the systematic description of the spaces of initial conditions for which there exists a unique local (in time) solution or a unique global solution for small data, (ii) the existence of forward self-similar solutions, (iii) the relation of these results to Leray's weak solutions and backward self-similar solutions, (iv) the extension of the results to further nonlinear evolutionary problems. Particular attention is paid to the critical spaces that are invariant under the self-similar transform. For sufficiently small Reynolds numbers, the conditional stability in the sense of Lyapunov is also studied. The article is endowed by interesting personal and historical comments and an exhaustive bibliography that gives the reader a complete picture about available literature. The papers "The dynamical system approach to the Navier-Stokes equa tions for compressible fluids" by Eduard Feireisl, and "Asymptotic problems and compressible-incompressible limits" by Nader Masmoudi are devoted to the global (in time) properties of solutions to the Navier-Stokes equa and three tions for compressible fluids. The global (in time) analysis of two dimensional motions of compressible fluids were left open for many years.
Download or read book Mean Field Games written by Yves Achdou and published by Springer Nature. This book was released on 2021-01-19 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides an introduction to the theory of Mean Field Games, suggested by J.-M. Lasry and P.-L. Lions in 2006 as a mean-field model for Nash equilibria in the strategic interaction of a large number of agents. Besides giving an accessible presentation of the main features of mean-field game theory, the volume offers an overview of recent developments which explore several important directions: from partial differential equations to stochastic analysis, from the calculus of variations to modeling and aspects related to numerical methods. Arising from the CIME Summer School "Mean Field Games" held in Cetraro in 2019, this book collects together lecture notes prepared by Y. Achdou (with M. Laurière), P. Cardaliaguet, F. Delarue, A. Porretta and F. Santambrogio. These notes will be valuable for researchers and advanced graduate students who wish to approach this theory and explore its connections with several different fields in mathematics.
Book Synopsis Nonlinear Markov Processes and Kinetic Equations by : Vassili N. Kolokoltsov
Download or read book Nonlinear Markov Processes and Kinetic Equations written by Vassili N. Kolokoltsov and published by Cambridge University Press. This book was released on 2010-07-15 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: A nonlinear Markov evolution is a dynamical system generated by a measure-valued ordinary differential equation with the specific feature of preserving positivity. This feature distinguishes it from general vector-valued differential equations and yields a natural link with probability, both in interpreting results and in the tools of analysis. This brilliant book, the first devoted to the area, develops this interplay between probability and analysis. After systematically presenting both analytic and probabilistic techniques, the author uses probability to obtain deeper insight into nonlinear dynamics, and analysis to tackle difficult problems in the description of random and chaotic behavior. The book addresses the most fundamental questions in the theory of nonlinear Markov processes: existence, uniqueness, constructions, approximation schemes, regularity, law of large numbers and probabilistic interpretations. Its careful exposition makes the book accessible to researchers and graduate students in stochastic and functional analysis with applications to mathematical physics and systems biology.
Book Synopsis Finite Volumes for Complex Applications IX - Methods, Theoretical Aspects, Examples by : Robert Klöfkorn
Download or read book Finite Volumes for Complex Applications IX - Methods, Theoretical Aspects, Examples written by Robert Klöfkorn and published by Springer Nature. This book was released on 2020-06-09 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 9th conference on "Finite Volumes for Complex Applications" (Bergen, June 2020) are structured in two volumes. The first volume collects the focused invited papers, as well as the reviewed contributions from internationally leading researchers in the field of analysis of finite volume and related methods. Topics covered include convergence and stability analysis, as well as investigations of these methods from the point of view of compatibility with physical principles. Altogether, a rather comprehensive overview is given on the state of the art in the field. The properties of the methods considered in the conference give them distinguished advantages for a number of applications. These include fluid dynamics, magnetohydrodynamics, structural analysis, nuclear physics, semiconductor theory, carbon capture utilization and storage, geothermal energy and further topics. The second volume covers reviewed contributions reporting successful applications of finite volume and related methods in these fields. The finite volume method in its various forms is a space discretization technique for partial differential equations based on the fundamental physical principle of conservation. Many finite volume methods preserve further qualitative or asymptotic properties, including maximum principles, dissipativity, monotone decay of free energy, and asymptotic stability, making the finite volume methods compatible discretization methods, which preserve qualitative properties of continuous problems at the discrete level. This structural approach to the discretization of partial differential equations becomes particularly important for multiphysics and multiscale applications. The book is a valuable resource for researchers, PhD and master’s level students in numerical analysis, scientific computing and related fields such as partial differential equations, as well as engineers working in numerical modeling and simulations.
Book Synopsis Interaction and Market Structure by : Domenico Delli Gatti
Download or read book Interaction and Market Structure written by Domenico Delli Gatti and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of essays which examine how the properties of aggregate variables are influenced by the actions and interactions of heterogenous individuals in different economic contexts. The common denominator of the essays is a critique of the representative agent hypothesis. If this hypothesis were correct, the behaviour of the aggregate variable would simply be the reproduction of individual optimising behaviour. In the methodology of the hard sciences, one of the achievements of the quantum revolution has been the rebuttal of the notion that aggregate behaviour can be explained on the basis of the behaviour of a single unit: the elementary particle does not even exist as a single entity but as a network, a system of interacting units. In this book, new tracks in economics which parallel the developments in physics mentioned above are explored. The essays, in fact are contributions to the analysis of the economy as a complex evolving system of interacting agents.
Book Synopsis Proceedings of the International Congress of Mathematicians by : S.D. Chatterji
Download or read book Proceedings of the International Congress of Mathematicians written by S.D. Chatterji and published by Birkhäuser. This book was released on 2012-12-06 with total page 1669 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first ICM was held in Zürich in 1897, it has become the pinnacle of mathematical gatherings. It aims at giving an overview of the current state of different branches of mathematics and its applications as well as an insight into the treatment of special problems of exceptional importance. The proceedings of the ICMs have provided a rich chronology of mathematical development in all its branches and a unique documentation of contemporary research. They form an indispensable part of every mathematical library. The Proceedings of the International Congress of Mathematicians 1994, held in Zürich from August 3rd to 11th, 1994, are published in two volumes. Volume I contains an account of the organization of the Congress, the list of ordinary members, the reports on the work of the Fields Medalists and the Nevanlinna Prize Winner, the plenary one-hour addresses, and the invited addresses presented at Section Meetings 1 - 6. Volume II contains the invited address for Section Meetings 7 - 19. A complete author index is included in both volumes. '...the content of these impressive two volumes sheds a certain light on the present state of mathematical sciences and anybody doing research in mathematics should look carefully at these Proceedings. For young people beginning research, this is even more important, so these are a must for any serious mathematics library. The graphical presentation is, as always with Birkhäuser, excellent....' (Revue Roumaine de Mathematiques pures et Appliquées)
Book Synopsis Physical Reality and Mathematical Description by : C.P. Enz
Download or read book Physical Reality and Mathematical Description written by C.P. Enz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of essays is intended as a tribute to Josef Maria Jauch on his sixtieth birthd~. Through his scientific work Jauch has justly earned an honored name in the community of theo retical physicists. Through his teaching and a long line of dis tinguished collaborators he has put an imprint on modern mathema tical physics. A number of Jauch's scientific collaborators, friends and admirers have contributed to this collection, and these essays reflect to some extent Jauch's own wide interests in the vast do main of theoretical physics. Josef Maria Jauch was born on 20 September 1914, the son of Josef Alois and Emma (nee Conti) Jauch, in Lucerne, Switzerland. Love of science was aroused in him early in his youth. At the age of twelve he came upon a popular book on astronomy, and an exam ple treated in this book mystified him. It was stated that if a planet travels around a centre of Newtonian attraction with a pe riod T, and if that planet were stopped and left to fall into the centre from any point of the circular orbit, it would arrive at the centre in the time T/I32. Young Josef puzzled about this for several months until he made his first scientific discovery : that this result could be derived from Kepler's third law in a quite elementary way.
Book Synopsis Handbook of Continuum Mechanics by : Jean Salencon
Download or read book Handbook of Continuum Mechanics written by Jean Salencon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outstanding approach to continuum mechanics. Its high mathematical level of teaching together with abstracts, summaries, boxes of essential formulae and numerous exercises with solutions, makes this handbook one of most complete books in the area. Students, lecturers, and practitioners will find this handbook a rich source for their studies or daily work.
Book Synopsis Applications of the Theory of Plasticity in Soil Mechanics by : Jean Salençon
Download or read book Applications of the Theory of Plasticity in Soil Mechanics written by Jean Salençon and published by John Wiley & Sons. This book was released on 1977 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Theory of Ionization of Gases by Collision by : Sir John Townsend
Download or read book The Theory of Ionization of Gases by Collision written by Sir John Townsend and published by . This book was released on 1910 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Singularities in Boundary Value Problems by : Pierre Grisvard
Download or read book Singularities in Boundary Value Problems written by Pierre Grisvard and published by Springer. This book was released on 1992 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Theory and Symmetries by : M. B. Paranjape
Download or read book Quantum Theory and Symmetries written by M. B. Paranjape and published by Springer Nature. This book was released on 2021 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of the CRM Conference Series is based on a carefully refereed selection of contributions presented at the "11th International Symposium on Quantum Theory and Symmetries", held in Montreal, Canada from July 1-5, 2019. The main objective of the meeting was to share and make accessible new research and recent results in several branches of Theoretical and Mathematical Physics, including Algebraic Methods, Condensed Matter Physics, Cosmology and Gravitation, Integrability, Non-perturbative Quantum Field Theory, Particle Physics, Quantum Computing and Quantum Information Theory, and String/ADS-CFT. There was also a special session in honour of Decio Levi. The volume is divided into sections corresponding to the sessions held during the symposium, allowing the reader to appreciate both the homogeneity and the diversity of mathematical tools that have been applied in these subject areas. Several of the plenary speakers, who are internationally recognized experts in their fields, have contributed reviews of the main topics to complement the original contributions. .
Download or read book Properties of UO2 written by J. Belle and published by . This book was released on 1957 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
