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Author: Abdelkader Fassi Fihri
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Author: Abdelkader Fassi Fihri
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
Author: Abdelkader Fassi Fihri
Publisher:
ISBN:
Category :
Languages : en
Pages : 230
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Book Description
L'INTEGRATION DES SYSTEMES D'EQUATIONS DIFFERENTIELLES ORDINAIRES DE LA CHIMIE ATMOSPHERIQUE POSE UN PROBLEME CONSIDERABLE AUX MODELISATEURS. LES CONSTANTES DE TEMPS DES ESPECES CHIMIQUES ETANT TRES DIFFERENTES LES UNES DES AUTRES, CES SYSTEMES DIFFERENTIELS SONT TRES RAIDES, CE QUI IMPLIQUE POUR LEUR RESOLUTION DE FORTES CONTRAINTES EN COUT-CALCUL, EN PARTICULIER DANS LES MODELES 3D COUPLANT PHYSIQUE ET CHIMIE DE L'ATMOSPHERE. DIVERSES PROCEDURES D'INTEGRATION ONT ETE PROPOSEES POUR RESOUDRE EFFICACEMENT (COUT-CALCUL MINIMAL ET PRECISION SUFFISANTE) DE TELS SYSTEMES. ICI, NOTRE DEMARCHE GENERALE VISE A EXPLORER SYSTEMATIQUEMENT ET DE MANIERE AUSSI EXHAUSTIVE QUE POSSIBLE CES PROCEDURES EN VUE DE FAIRE RESSORTIR LES PLUS EFFICIENTES DU POINT DE VUE DE LEUR APPLICATION EN CHIMIE ATMOSPHERIQUE. LA PREMIERE PARTIE EST CONSACREE A UNE PRESENTATION GENERALE SUCCINCTE DES MODELES CHIMIQUES. UN MODELE D'AEROSOLS EST TOUT D'ABORD DEVELOPPE, QUI TRAITE DU CARACTERE INTERNE/EXTERNE DE LEUR MELANGE. PUIS UNE ETUDE PRELIMINAIRE DE L'INTERACTION NUAGE/AEROSOLS EST EFFECTUEE A L'AIDE D'UN MODELE D'AEROSOLS COUPLANT PHYSICO-CHIMIE DES AEROSOLS ET CHIMIE EN PHASE GAZEUSE. ENFIN, DES TESTS SONT EFFECTUES SUR UN MODULE EXTENSIF REPRESENTATIF DE LA CHIMIE GAZEUSE TROPOSPHERIQUE. DANS LA DEUXIEME PARTIE, NOUS DECRIVONS DU POINT DE VUE MATHEMATIQUE LES CARACTERISTIQUES DES SYSTEMES DIFFERENTIELS RAIDES, LES CONTRAINTES NECESSAIRES A IMPOSER A LEUR RESOLUTION NUMERIQUE. IL EST PROCEDE A UN RECENSEMENT DES METHODES NUMERIQUES DISPONIBLES, CLASSIQUES ET HYBRIDES. ON PASSE ENSUITE DANS LA TROISIEME PARTIE A UNE CONFRONTATION DE CES DIFFERENTES TECHNIQUES D'INTEGRATION QUANT A LEUR PRECISION ET LEUR COUT-CALCUL, SUR DIFFERENTS SYSTEMES CHIMIQUES, DE RAIDEUR ET DE DIMENSIONS VARIABLES.
Author: J. Gautheyrou
Publisher: CRC Press
ISBN: 9789054107163
Category : Technology & Engineering
Languages : en
Pages : 514
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Book Description
The objective of this book is to provide a better understanding of tools for soil analysis in order to use them more efficiently. It covers sampling problems as well as difficulties relating to actual analysis and quality control.
Author: Jean Salençon
Publisher: John Wiley & Sons
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 184
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Author: Chevalier François Le
Publisher: Artech House
ISBN: 9781608071357
Category : Radar
Languages : en
Pages : 422
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Book Description
Author: Jean Salencon
Publisher: Springer Science & Business Media
ISBN: 3642565425
Category : Science
Languages : en
Pages : 794
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Book Description
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.
Author: Jean-Marie Basset
Publisher: Wiley-VCH
ISBN: 9783527319725
Category : Science
Languages : en
Pages : 725
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Book Description
Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.
Author: Denis L. Blackmore
Publisher: World Scientific
ISBN: 9812563202
Category : Science
Languages : en
Pages : 299
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Book Description
Honoring the contributions of one of the field's leading experts, Lu Ting, this indispensable volume contains important new results at the cutting edge of research. A wide variety of significant new analytical and numerical results in critical areas are presented, including point vortex dynamics, superconductor vortices, cavity flows, vortex breakdown, shock/vortex interaction, wake flows, magneto-hydrodynamics, rotary wake flows, and hypersonic vortex phenomena.The book will be invaluable for those interested in the state of the art of vortex dominated flows, both from a theoretical and applied perspective.Professor Lu Ting and Joe Keller have worked together for over 40 years. In their first joint work entitled ?Periodic vibrations of systems governed by nonlinear partial differential equations?, perturbation analysis and bifurcation theory were used to determine the frequencies and modes of vibration of various physical systems. The novelty was the application to partial differential equations of methods which, previously, had been used almost exclusively on ordinary differential equations. Professsor Lu Ting is an expert in both fluid dynamics and the use of matched asymptotic expansions. His physical insight into fluid flows has led the way to finding the appropriate mathematical simplications used in the solutions to many difficult flow problems.
Author: Jean Salençon
Publisher: Wiley-ISTE
ISBN: 9781848215405
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Since the middle of the 20th Century yield design approaches have been identified with the lower and upper bound theorem of limit analysis theory – a theory associated with perfect plasticity. This theory is very restrictive regarding the applicability of yield design approaches, which have been used for centuries for the stability of civil engineering structures. This book presents a theory of yield design within the original “equilibrium/resistance” framework rather than referring to the theories of plasticity or limit analysis; expressing the compatibility between the equilibrium of the considered structure and the resistance of its constituent material through simple mathematical arguments of duality and convex analysis results in a general formulation, which encompasses the many aspects of its implementation to various stability analysis problems. After a historic outline and an introductory example, the general theory is developed for the three-dimensional continuum model in a versatile form based upon simple arguments from the mathematical theory of convexity. It is then straightforwardly transposed to the one-dimensional curvilinear continuum, for the yield design analysis of beams, and the two-dimensional continuum model of plates and thin slabs subjected to bending. Field and laboratory observations of the collapse of mechanical systems are presented along with the defining concept of the multi-parameter loading mode. The compatibility of equilibrium and resistance is first expressed in its primal form, on the basis of the equilibrium equations and the strength domain of the material defined by a convex strength criterion along with the dual approach in the field of potentially safe loads, as is the highlighting of the role implicitly played by the theory of yield design as the fundamental basis of the implementation of the ultimate limit state design (ULSD) philosophy with the explicit introduction of resistance parameters. Contents 1. Origins and Topicality of a Concept. 2. An Introductory Example of the Yield Design Approach. 3. The Continuum Mechanics Framework. 4. Primal Approach of the Theory of Yield Design. 5. Dual Approach of the Theory of Yield Design. 6. Kinematic Exterior Approach. 7. Ultimate Limit State Design from the Theory of Yield Design. 8. Optimality and Probability Approaches of Yield Design. 9. Yield Design of Structures. 10. Yield Design of Plates: the Model. 11. Yield Design of Plates Subjected to Pure Bending. About the Authors Jean Salençon is Emeritus Professor at École polytechnique and École des ponts et chaussées, ParisTech, France. Since 2009 he has been a member of the Administrative Board of CNRS (Paris, France). He has received many awards including the Légion d’Honneur (Commander), Ordre National du Mérite (Officer) and Palmes Académiques (Commander). His research interests include structure analysis, soil mechanics and continuum mechanics.
Author: A. Berlemont
Publisher:
ISBN: 9781489915955
Category :
Languages : en
Pages : 356
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Book Description
