ANALYSE D'UN PROBLEME DYNAMIQUE D'INTERACTION FLUIDE-STRUCTURE PDF Download
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Author: RAPHAEL.. PAPI
Publisher:
ISBN:
Category :
Languages : fr
Pages : 156
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Book Description
L'OBJET DE CETTE THESE EST LA MISE AU POINT D'UNE METHODE ITERATIVE PERMETTANT LA RESOLUTION NUMERIQUE D'UN PROBLEME DYNAMIQUE (P) D'INTERACTION FLUIDE-STRUCTURE. LA DIFFICULTE ESSENTIELLE (TOUT AU MOINS POUR CETTE METHODE ET DANS LE CAS D'UN FLUIDE LOURD) PROVIENT DE L'AMPLIFICATION DE L'ERREUR DUE A LA DISCRETISATION TEMPORELLE DU TERME DE COUPLAGE A L'INTERFACE. POUR Y REMEDIER NOUS N'AVONS PAS RESOLU LE PROBLEME (P), MAIS UN PROBLEME PENALISE, NOTE (PE), DONT ON MONTRE QUE LA SOLUTION CONVERGE VERS LA SOLUTION DU PROBLEME (P). EN PREMIER LIEU NOUS PRESENTONS LES EQUATIONS DYNAMIQUES DU PROBLEME (P) MODELISANT UN SYSTEME COUPLE PLAQUE-EAU EXPERIMENTAL. NOUS DONNONS ENSUITE DES CONDITIONS D'EXISTENCE, D'UNICITE, DE REGULARITE DES SOLUTIONS DES PROBLEMES (P) ET (PE) AINSI QU'UNE ESTIMATION DE L'ERREUR COMMISE LORS DE LA RESOLUTION DU PROBLEME APPROCHE (PE). AU CHAPITRE 3, APRES AVOIR PRESENTE LA METHODE, NOUS ETABLISSONS UNE CONDITION DE CONVERGENCE DE LA SOLUTION POUR LE PROBLEME (PE). POUR VALIDER LA METHODE NOUS CONSTRUISONS DES SOLUTIONS ANALYTIQUES DANS LE CAS DE CONDITIONS AUX LIMITES PARTICULIERES ET NOUS PRESENTONS LES RESULTATS EXPERIMENTAUX OBTENUS (PAR ANALYSE SPECTRALE) LORS DE L'ETUDE D'UN MONTAGE CONSTITUE D'UNE PLAQUE MINCE EN ACIER SURMONTEE D'UNE CUVE EN PLEXIGLASS CONTENANT DE L'EAU. ENFIN NOUS COMPARONS LES RESULTATS NUMERIQUES A CEUX OBTENUS DANS LE CAS ANALYTIQUE ET DANS LE CAS EXPERIMENTAL
Author: RAPHAEL.. PAPI
Publisher:
ISBN:
Category :
Languages : fr
Pages : 156
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Book Description
L'OBJET DE CETTE THESE EST LA MISE AU POINT D'UNE METHODE ITERATIVE PERMETTANT LA RESOLUTION NUMERIQUE D'UN PROBLEME DYNAMIQUE (P) D'INTERACTION FLUIDE-STRUCTURE. LA DIFFICULTE ESSENTIELLE (TOUT AU MOINS POUR CETTE METHODE ET DANS LE CAS D'UN FLUIDE LOURD) PROVIENT DE L'AMPLIFICATION DE L'ERREUR DUE A LA DISCRETISATION TEMPORELLE DU TERME DE COUPLAGE A L'INTERFACE. POUR Y REMEDIER NOUS N'AVONS PAS RESOLU LE PROBLEME (P), MAIS UN PROBLEME PENALISE, NOTE (PE), DONT ON MONTRE QUE LA SOLUTION CONVERGE VERS LA SOLUTION DU PROBLEME (P). EN PREMIER LIEU NOUS PRESENTONS LES EQUATIONS DYNAMIQUES DU PROBLEME (P) MODELISANT UN SYSTEME COUPLE PLAQUE-EAU EXPERIMENTAL. NOUS DONNONS ENSUITE DES CONDITIONS D'EXISTENCE, D'UNICITE, DE REGULARITE DES SOLUTIONS DES PROBLEMES (P) ET (PE) AINSI QU'UNE ESTIMATION DE L'ERREUR COMMISE LORS DE LA RESOLUTION DU PROBLEME APPROCHE (PE). AU CHAPITRE 3, APRES AVOIR PRESENTE LA METHODE, NOUS ETABLISSONS UNE CONDITION DE CONVERGENCE DE LA SOLUTION POUR LE PROBLEME (PE). POUR VALIDER LA METHODE NOUS CONSTRUISONS DES SOLUTIONS ANALYTIQUES DANS LE CAS DE CONDITIONS AUX LIMITES PARTICULIERES ET NOUS PRESENTONS LES RESULTATS EXPERIMENTAUX OBTENUS (PAR ANALYSE SPECTRALE) LORS DE L'ETUDE D'UN MONTAGE CONSTITUE D'UNE PLAQUE MINCE EN ACIER SURMONTEE D'UNE CUVE EN PLEXIGLASS CONTENANT DE L'EAU. ENFIN NOUS COMPARONS LES RESULTATS NUMERIQUES A CEUX OBTENUS DANS LE CAS ANALYTIQUE ET DANS LE CAS EXPERIMENTAL
Author: Francois Axisa
Publisher: Elsevier
ISBN: 008047540X
Category : Technology & Engineering
Languages : en
Pages : 794
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Book Description
Written by an eminent authority in the field, Modelling of Mechanical Systems: Fluid-Structure Interaction is the third in a series of four self-contained volumes suitable for practitioners, academics and students alike in engineering, physical sciences and applied mechanics. The series skilfully weaves a theoretical and pragmatic approach to modelling mechanical systems and to analysing the responses of these systems. The study of fluid-structure interactions in this third volume covers the coupled dynamics of solids and fluids, restricted to the case of oscillatory motions about a state of static equilibrium. Physical and mathematical aspects of modelling these mechanisms are described in depth and illustrated by numerous worked out exercises.· Written by a world authority in the field in a clear, concise and accessible style · Comprehensive coverage of mathematical techniques used to perform computer-based analytical studies and numerical simulations · A key reference for mechanical engineers, researchers and graduate students
Author: Abdelkhalak El Hami
Publisher: John Wiley & Sons
ISBN: 1119388910
Category : Science
Languages : en
Pages : 236
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Book Description
This book is dedicated to the general study of fluid structure interaction with consideration of uncertainties. The fluid-structure interaction is the study of the behavior of a solid in contact with a fluid, the response can be strongly affected by the action of the fluid. These phenomena are common and are sometimes the cause of the operation of certain systems, or otherwise manifest malfunction. The vibrations affect the integrity of structures and must be predicted to prevent accelerated wear of the system by material fatigue or even its destruction when the vibrations exceed a certain threshold.
Author: Abdelkhalak El Hami
Publisher: John Wiley & Sons
ISBN: 1848219393
Category : Science
Languages : en
Pages : 284
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Book Description
This book is dedicated to the general study of fluid structure interaction with consideration of uncertainties. The fluid-structure interaction is the study of the behavior of a solid in contact with a fluid, the response can be strongly affected by the action of the fluid. These phenomena are common and are sometimes the cause of the operation of certain systems, or otherwise manifest malfunction. The vibrations affect the integrity of structures and must be predicted to prevent accelerated wear of the system by material fatigue or even its destruction when the vibrations exceed a certain threshold.
Author: Jean-François Sigrist
Publisher: John Wiley & Sons
ISBN: 1118927745
Category : Science
Languages : en
Pages : 304
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Book Description
Fluid-Structure Interaction: An Introduction to FiniteElement Coupling fulfils the need for an introductive approachto the general concepts of Finite and Boundary Element Methods forFSI, from the mathematical formulation to the physicalinterpretation of numerical simulations. Based on theauthor’s experience in developing numerical codes forindustrial applications in shipbuilding and in teaching FSI to bothpracticing engineers and within academia, it provides acomprehensive and self–contained guide that is geared towardboth students and practitioners of mechanical engineering. Composedof six chapters, Fluid–Structure Interaction: An Introduction to FiniteElement Coupling progresses logically from formulations andapplications involving structure and fluid dynamics, fluid andstructure interactions and opens to reduced order-modelling forvibro-acoustic coupling. The author describes simple yetfundamental illustrative examples in detail, using analyticaland/or semi–analytical formulation & designed both toillustrate each numerical method and also to highlight a physicalaspect of FSI. All proposed examples are simple enough to becomputed by the reader using standard computational tools such asMATLAB, making the book a unique tool for self–learning andunderstanding the basics of the techniques for FSI, or can serve asverification and validation test cases of industrial FEM/BEM codesrendering the book valuable for code verification and validationpurposes.
Author: Jean-Marie Crolet
Publisher: CRC Press
ISBN: 9780582236912
Category : Mathematics
Languages : en
Pages : 302
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Book Description
Fluid-structure interaction is a new theme of investigation in computational methods, covering many applications in both engineering and medical sciences. This book deals with various examples of interaction between a fluid and a structure, and each author presents, for the different problems involved, the method which is considered to be the most appropriate.
Author: Hela Ayed
Publisher:
ISBN:
Category :
Languages : fr
Pages : 127
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Book Description
Cette thèse est consacrée à l'analyse mathématique et numérique d'un problème d'interaction fluide-structure stationnaire, couplant un fluide newtonien, visqueux et incompressible, modélisé par les équations de Stokes 2D et une structure déformable, décrite par les équations d'une poutre 1D. Le fluide et la structure sont couplés via une condition aux limites de type frottement à l'interface.Dans l'étude théorique, nous montrons un résultat d'existence et unicité de solutions faibles, dans le cadre de petits déplacements, du problème de couplage fluide structure avec une condition de glissement de type Tresca en utilisant le théorème de point fixe de Schauder.Dans l'analyse numérique, nous étudions d'abord, l'approximation du problème de Stokes avec la condition de Tresca par une méthode d'éléments finis mixtes à quatre champs. Nous montrons ensuite une estimation d'erreur a priori optimale pour des données régulières et nous réalisons des tests numériques. Enfin, nous présentons un algorithme de point fixe pour la simulation numérique du problème couplé avec des conditions aux limites non linéaires.
Author: C. A. Brebbia
Publisher: WIT Press
ISBN: 1845641825
Category : Science
Languages : en
Pages : 401
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Book Description
Encompassing a wide range of topics within fluid structure interaction, this volume features contributions on topics such as hydrodynamic forces, offshore structure and ship dynamics, structure response to severe shock and blast loading, and the mechanics of cables, risers and moorings.
Author: Leister, Tim
Publisher: KIT Scientific Publishing
ISBN: 3731511126
Category : Technology & Engineering
Languages : en
Pages : 192
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Book Description
The gas foil bearing (GFB) technology is a key factor for the transition to oil-free rotating machinery. Among numerous advantages, GFBs offer the unique ability to be lubricated with working fluids such as refrigerants. However, the computational analysis of refrigerant-lubricated GFB–rotor systems represents an interdisciplinary problem of enormous complexity. This work pushes forward existing limits of feasibility and establishes a new strategy that enables stability and bifurcation analyses.
Author: Jing Tang Xing
Publisher: Academic Press
ISBN: 0128193530
Category : Technology & Engineering
Languages : en
Pages : 682
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Book Description
Fluid-Solid Interaction Dynamics: Theory, Variational Principles, Numerical Methods and Applications gives a comprehensive accounting of fluid-solid interaction dynamics, including theory, numerical methods and their solutions for various FSI problems in engineering. The title provides the fundamental theories, methodologies and results developed in the application of FSI dynamics. Four numerical approaches that can be used with almost all integrated FSI systems in engineering are presented. Methods are linked with examples to illustrate results. In addition, numerical results are compared with available experiments or numerical data in order to demonstrate the accuracy of the approaches and their value to engineering applications. The title gives readers the state-of-the-art in theory, variational principles, numerical modeling and applications for fluid-solid interaction dynamics. Readers will be able to independently formulate models to solve their engineering FSI problems using information from this book. - Presents the state-of-the-art in fluid-solid interaction dynamics, providing theory, method and results - Takes an integrated approach to formulate, model and simulate FSI problems in engineering - Illustrates results with concrete examples - Gives four numerical approaches and related theories that are suitable for almost all integrated FSI systems - Provides the necessary information for bench scientists to independently formulate, model, and solve physical FSI problems in engineering
