Download or read book Mod lisation d coulements surface libre avec fronts mobiles par l ments finis written by Bainian Zhang and published by . This book was released on 1992 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA METHODE DES ELEMENTS FINIS A CONNU DEPUIS QUELQUES DIZAINES D'ANNEES UN ESSOR REMARQUABLE A CAUSE DE L'ACCROISSEMENT DE LA CAPACITE DES ORDINATEURS. TOUT D'ABORD CONFINEE A LA MECANIQUE DES STRUCTURES, LA METHODE DES ELEMENTS FINIS A ETE APPLIQUEE AVEC SUCCES A LA MECANIQUE DES FLUIDES ET PLUS PARTICULIEREMENT A L'HYDRODYNAMIQUE OU ELLE TROUVE UN TERRAIN D'APPLICATION REMARQUABLE A CAUSE DE LA DESCRIPTION DU MILIEU PHYSIQUE AUX FRONTIERES ET A LA BATHYMETRIE SOUVENT COMPLEXES. LE PRESENT TRAVAIL S'INSCRIT DANS CETTE PERSPECTIVE ET PRESENTE TOUT D'ABORD LES MODELES GENERAUX TRIDIMENSIONNELS DE TYPE NAVIER-STOKES AINSI QUE LA DERIVATION DES MODELES BIDIMENSIONNELS HORIZONTAUX ASSOCIES DE TYPE SAINT-VENANT. POUR CE DERNIER SYSTEME D'EQUATIONS INSTATIONNAIRES, NON LINEAIRES, PLUSIEURS METHODES DE RESOLUTION ONT ETE EXAMINEES, MISES EN UVRE ET TESTEES. EN ASSOCIATION AVEC CES STRATEGIES DE RESOLUTION, UNE SERIE D'ELEMENTS TRIANGULAIRES TRES SIMPLES A ETE TESTEE POUR SELECTIONNER LES ELEMENTS LES PLUS INTERESSANTS POUR UNE MISE EN UVRE OPTIMALE DANS LE CONTEXTE DE LA METHODE DES ELEMENTS FINIS. UNE SERIE D'EXEMPLES STATIONNAIRES ET INSTATIONNAIRES PERMET DE PRESENTER LEURS PERFORMANCES ET LEUR APPLICABILITE DANS UNE UTILISATION CONCRETE; L'ETUDE DE LA PROPAGATION DE LA MAREE DANS LA MANCHE FOURNIT, A CET EGARD, UNE BONNE ILLUSTRATION. ENFIN, LA MODELISATION DE LA PROPAGATION DES ECOULEMENTS DANS DES DOMAINES AVEC FRONTIERE MOBILE A ETE DUMENT ETUDIEE. CERTAINS ASPECTS AUSSI BIEN PHYSIQUES QUE MATHEMATIQUES DU PHENOMENE SONT RAPPELES. UNE DEMARCHE ALGORITHMIQUE EST PROPOSEE, ET VALIDEE SUR DES CAS COMPORTEMENTAUX

Download or read book MODELISATION TRIDIMENSIONNELLE PAR ELEMENTS FINIS DU LAMINAGE A CHAUD DES TUBES SANS SOUDURE written by Michel Vacance and published by . This book was released on 1993 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA FABRICATION DES TUBES SANS SOUDURE FAIT INTERVENIR PLUSIEURS PROCEDES. APRES PERCAGE PAR UN PERCEUR ROTATIF, LE TUBE EST LAMINE PAR UN TRAIN CONTINU (MPM). D'AUTRES PROCEDES DE LAMINAGE OBLIQUE (ELONGATEUR, EXPANSEUR, LISSEUR) A DEUX OU TROIS CYLINDRES INTERVIENNENT AUSSI DANS LA FABRICATION. LA SIMULATION NUMERIQUE DE CES PROCEDES DEMEURE PEU DEVELOPPEE, NOTAMMENT POUR LE LAMINAGE OBLIQUE. CETTE THESE PRESENTE UN MODELE DE CALCUL TRIDIMENSIONNEL PAR ELEMENTS FINIS POUR LA SIMULATION DE LA PHASE STATIONNAIRE DES PROCEDES DE PERCAGE ROTATIF, DE LAMINAGE OBLIQUE ET DE LAMINAGE CONTINU PAR LES CAGES DU MPM. LE MATERIAU, HOMOGENE ET INCOMPRESSIBLE, SUIT UNE LOI DE COMPORTEMENT THERMO-VISCOPLASTIQUE DE NORTON HOFF. LE FROTTEMENT PEUT ETRE CARACTERISE PAR LES LOIS DE NORTON OU DE COULOMB. LA DISCRETISATION DU PROBLEME MECANIQUE CONDUIT A UN SYSTEME NON LINEAIRE, RESOLU DE MANIERE ITERATIVE PAR LA METHODE DE NEWTON-RAPHSON. UN COUPLAGE THERMOMECANIQUE EST EFFECTUE. LA DEFORMATION GENERALISEE ET LA TEMPERATURE SONT CALCULEES PAR UNE METHODE DE STREAMLINE UPWIND PETROV-GALERKIN. L'EVOLUTION THERMIQUE TIENT COMPTE DU RAYONNEMENT, DE L'ECHANGE CONVECTIF AVEC LES CYLINDRES, DE L'ECHAUFFEMENT PAR FROTTEMENT ET PAR DEFORMATION PLASTIQUE, AINSI QUE DE LA DIFFUSION DANS LA MATIERE. LES EFFORTS DE LAMINAGE EXERCES SUR LES OUTILS SONT CALCULES. AFIN DE DETERMINER LA POSITION OCCUPEE PAR LA MATIERE AU COURS DE LA PHASE STATIONNAIRE DU PROCEDE, PLUSIEURS METHODES DE CALCUL DE SURFACES LIBRES SONT ETUDIEES. LA METHODE CLASSIQUE D'INTEGRATION DE LA VITESSE LE LONG DES LIGNES DE COURANT, ET LA TECHNIQUE DE MINIMISATION DU FLUX SONT PRESENTEES POUR LE MPM. UNE FORMULATION ORIGINALE ET PLUS GENERALE DU PROBLEME DE SURFACES LIBRES SOUS FORME D'EQUATION DE TRANSPORT A ETE DEVELOPPEE ET APPLIQUEE AVEC SUCCES AU LAMINAGE OBLIQUE. L'INFLUENCE DES PARAMETRES TECHNOLOGIQUES EST ETUDIEE ET LES RESULTATS NUMERIQUES SONT CONFRONTES AVEC LES MESURES EXPERIMENTALES DISPONIBLES

Download or read book CONTRIBUTION A LA MODELISATION THERMOMECANIQUE TRIDIMENSIONNELLE PAR ELEMENTS FINIS DU LAMINAGE A CHAUD DES TUBES written by Guy Sola and published by . This book was released on 1994 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS AVONS DEVELOPPE UN MODELE NUMERIQUE POUR SIMULER LE LAMINAGE DE TUBES SUR MANDRIN (MPM) PAR 8 CAGES EN TANDEM. UNE APPROCHE EULERIENNE STATIONNAIRE A ETE UTILISEE. UN CALCUL TRIDIMENSIONNEL THERMOMECANIQUE A ETE NECESSAIRE. LE COMPORTEMENT VISCOPLASTIQUE DU MATERIAU A ETE MODELISE PAR UNE LOI DE NORTON-HOFF. NOTRE MODELE MET EN UVRE UNE LOI DE FROTTEMENT DE COULOMB-NORTON. LE PROBLEME MECANIQUE AINSI DETERMINE EST RESOLU PAR LA METHODE DES ELEMENTS FINIS. LE CALCUL THERMIQUE EST EFFECTUE PAR LA METHODE DE STREAMLINE UPWIND PETROV-GALERKIN, SUR UN MAILLAGE SPECIFIQUE QUI ATTENUE LES OSCILLATIONS NUMERIQUES DANS L'EPAISSEUR. LE MAILLAGE MECANIQUE EST ALORS UN SOUS-MAILLAGE DU MAILLAGE THERMIQUE. LE CALCUL DES SURFACES EN CONTACT UTILISE UN CRITERE EN PRESSION DE CONTACT POUR DETERMINER LE RELACHEMENT D'UN NUD, ET UN CRITERE D'IMPENETRABILITE DES OUTILS POUR DETERMINER LA MISE EN CONTACT D'UN NUD. LE CALCUL DES SURFACES LIBRES EST EFFECTUE PAR LA METHODE DES LIGNES DE COURANT. LA REACTUALISATION DE LA GEOMETRIE EST ALORS POSSIBLE, IL S'AGIT DES JUXTAPOSER LES SURFACES LIBRES ET LES SURFACES EN CONTACT. LES CALCULS DE LA VITESSE, DE LA GEOMETRIE, ET DE LA TEMPERATURE SONT EFFECTUES SEPAREMENT, AINSI, LE COUPLAGE EST FAIBLE, CELA ASSURE LA CONVERGENCE DU CALCUL GLOBAL EN UNE DIZAINE D'ITERATIONS. LES INTERACTIONS ENTRE CAGES SONT MODELISEES PAR DES EQUATIONS LINEAIRES EN VITESSES ET TENSIONS. LES COEFFICIENTS DE SENSIBILITE DES VITESSES AUX TENSIONS SONT DETERMINES PAR DERIVATION DU GRADIENT DE LA FONCTIONNELLE VISCOPLASTIQUE. LA NON-LINEARITE DES INTERACTIONS ENTRE CAGES NON IMPOSE UNE RESOLUTION ITERATIVE. AVEC DES DONNEES INDUSTRIELLES, LA CONVERGENCE DU CALCUL MULTICAGE EST ASSUREE APRES ENVIRON 3 ITERATIONS

Download or read book Conference Canadian Society for Civil Engineering written by Canadian Society for Civil Engineering. Conference and published by . This book was released on 1984 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modelisation tridimensionnelle par la methode des elements finis de l ecoulement et du transport en milieu poreux sature written by Franck Jacob and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Boundary Layer Theory written by Hermann Schlichting (Deceased) and published by Springer. This book was released on 2016-10-04 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of the near-legendary textbook by Schlichting and revised by Gersten presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with particular emphasis on the flow past bodies (e.g. aircraft aerodynamics). The new edition features an updated reference list and over 100 additional changes throughout the book, reflecting the latest advances on the subject.

Download or read book Groundwater Modelling in Arid and Semi Arid Areas written by Howard S. Wheater and published by Cambridge University Press. This book was released on 2010-09-09 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Arid and semi-arid regions face major challenges in the management of scarce freshwater resources under pressures of population, economic development, climate change, pollution and over-abstraction. Groundwater is commonly the most important water resource in these areas. Groundwater models are widely used globally to understand groundwater systems and to guide decisions on management. However, the hydrology of arid and semi-arid areas is very different from that of humid regions, and there is little guidance on the special challenges of groundwater modelling for these areas. This book brings together the experience of internationally leading experts to fill a gap in the scientific and technical literature. It introduces state-of-the-art methods for modelling groundwater resources, illustrated with a wide-ranging set of illustrative examples from around the world. The book is valuable for researchers, practitioners in developed and developing countries, and graduate students in hydrology, hydrogeology, water resources management, environmental engineering and geography.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Modeling of Mechanical Systems written by Mohamed Haddar and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 5th International Congress on Design and Modeling of Mechanical Systems (CMSM) was held in Djerba, Tunisia on March 25-27, 2013 and followed four previous successful editions, which brought together international experts in the fields of design and modeling of mechanical systems, thus contributing to the exchange of information and skills and leading to a considerable progress in research among the participating teams. The fifth edition of the congress (CMSM ́2013), organized by the Unit of Mechanics, Modeling and Manufacturing (U2MP) of the National School of Engineers of Sfax, Tunisia, the Mechanical Engineering Laboratory (MBL) of the National School of Engineers of Monastir, Tunisia and the Mechanics Laboratory of Sousse (LMS) of the National School of Engineers of Sousse, Tunisia, saw a significant increase of the international participation. This edition brought together nearly 300 attendees who exposed their work on the following topics: mechatronics and robotics, dynamics of mechanical systems, fluid structure interaction and vibroacoustics, modeling and analysis of materials and structures, design and manufacturing of mechanical systems. This book is the proceedings of CMSM ́2013 and contains a careful selection of high quality contributions, which were exposed during various sessions of the congress. The original articles presented here provide an overview of recent research advancements accomplished in the field mechanical engineering.

Download or read book Basic Concepts for Simple and Complex Liquids written by Jean-Louis Barrat and published by Cambridge University Press. This book was released on 2003-03-27 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a unified approach, this book focusses on the concepts and theoretical methods that are necessary for an understanding of the physics and chemistry of the fluid state. The authors do not attempt to cover the whole field in an encyclopedic manner. Instead, important ideas are presented in a concise and rigorous style, and illustrated with examples from both simple molecular liquids and more complex soft condensed matter systems such as polymers, colloids, and liquid crystals.

Download or read book Computational Fluid Dynamics written by Jiri Blazek and published by Elsevier. This book was released on 2005-12-20 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamics (CFD) is an important design tool in engineering and also a substantial research tool in various physical sciences as well as in biology. The objective of this book is to provide university students with a solid foundation for understanding the numerical methods employed in today's CFD and to familiarise them with modern CFD codes by hands-on experience. It is also intended for engineers and scientists starting to work in the field of CFD or for those who apply CFD codes. Due to the detailed index, the text can serve as a reference handbook too. Each chapter includes an extensive bibliography, which provides an excellent basis for further studies.

Download or read book Free and Moving Boundaries written by Roland Glowinski and published by CRC Press. This book was released on 2007-06-06 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressing algebraic problems found in biomathematics and energy, Free and Moving Boundaries: Analysis, Simulation and Control discusses moving boundary and boundary control in systems described by partial differential equations (PDEs). With contributions from international experts, the book emphasizes numerical and theoretical control of mo

Download or read book On the Continuity of the Gaseous and Liquid States written by J. D. Van Der Waals and published by Courier Corporation. This book was released on 2004-01-01 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This much-cited thesis by J. D. van der Waals, the recipient of the 1910 Nobel Prize in physics, is accompanied by an introductory essay by J. S. Rowlinson and another work by van der Waals on the theory of liquid mixtures. 1988 edition.

Download or read book Hydrodynamics of Free Surface Flows written by Jean-Michel Hervouet and published by John Wiley & Sons. This book was released on 2007-06-13 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: A definitive guide for accurate state-of-the-art modelling of free surface flows Understanding the dynamics of free surface flows is the starting point of many environmental studies, impact studies, and waterworks design. Typical applications, once the flows are known, are water quality, dam impact and safety, pollutant control, and sediment transport. These studies used to be done in the past with scale models, but these are now being replaced by numerical simulation performed by software suites called “hydro-informatic systems”. The Telemac system is the leading software package worldwide, and has been developed by Electricité de France and Jean-Michel Hervouet, who is the head and main developer of the Telemac project. Written by a leading authority on Computational Fluid Dynamics, the book aims to provide environmentalists, hydrologists, and engineers using hydro-informatic systems such as Telemac and the finite element method, with the knowledge of the basic principles, capabilities, different hypotheses, and limitations. In particular this book: presents the theory for understanding hydrodynamics through an extensive array of case studies such as tides, tsunamis, storm surges, floods, bores, dam break flood waves, density driven currents, hydraulic jumps, making this a principal reference on the topic gives a detailed examination and analysis of the notorious Malpasset dam failure includes a coherent description of finite elements in shallow water delivers a significant treatment of the state-of-the-art flow modelling techniques using Telemac, developed by Electricité de France provides the fundamental physics and theory of free surface flows to be utilised by courses on environmental flows Hydrodynamics of Free Surface Flows is essential reading for those involved in computational fluid dynamics and environmental impact assessments, as well as hydrologists, and bridge, coastal and dam engineers. Guiding readers from fundamental theory to the more advanced topics in the application of the finite element method and the Telemac System, this book is a key reference for a broad audience of students, lecturers, researchers and consultants, right through to the community of users of hydro-informatics systems.

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Download or read book Advances in Hydroinformatics written by Philippe Gourbesville and published by Springer Science & Business Media. This book was released on 2013-11-12 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a collection of extended papers which have been selected for presentation during the SIMHYDRO 2012 conference held in Sophia Antipolis in September 2012. The papers present the state of the art numerical simulation in domains such as (1) New trends in modelling for marine, river & urban hydraulics; (2) Stakeholders & practitioners of simulation; (3) 3D CFD & applications. All papers have been peer reviewed and by scientific committee members with report about quality, content and originality. The target audience for this book includes scientists, engineers and practitioners involved in the field of numerical modelling in the water sector: flood management, natural resources preservation, hydraulic machineries, and innovation in numerical methods, 3D developments and applications.