Simulation Numerique Decoulements Gaz Particules Sur Maillage Non Structure

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Simulation numérique d'écoulements gaz-particules sur maillage non structuré

Author : Laure Combe
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis Simulation numérique d'écoulements gaz-particules sur maillage non structuré by : Laure Combe

Download or read book Simulation numérique d'écoulements gaz-particules sur maillage non structuré written by Laure Combe and published by . This book was released on 1997 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: ON S'INTERESSE A LA SIMULATION D'ECOULEMENTS DIPHASIQUES COMPRESSIBLES INSTATIONNAIRES SUR MAILLAGE NON STRUCTURE PAR DES METHODES VOLUMES FINIS DECENTREES. ON RETIENT UN MODELE A DEUX FLUIDES A QUATRE EQUATIONS POUR LA SIMULATION D'ECOULEMENTS GAZ-PARTICULES. LE SYSTEME DE CONVECTION ASSOCIE EST NON CONSERVATIF ET CONDITIONNELLEMENT HYPERBOLIQUE. ON NE SAIT PAS RESOUDRE LE PROBLEME DE RIEMANN UNIDIMENSIONNEL ASSOCIE ET L'ON NE PEUT PAS DEMONTRER LE RESPECT DU PRINCIPE DU MAXIMUM POUR LA VARIABLE FRACTION VOLUMIQUE. ON PROPOSE ALORS UNE METHODE A PAS FRACTIONNAIRES POUR LA RESOLUTION DE CE SYSTEME DE SORTE QUE LE PRINCIPE DU MAXIMUM SOIT PRESERVE DANS CHACUN DES SOUS-PAS. CHAQUE SOUS-SYSTEME EST RESOLU PAR UN SOLVEUR DE TYPE GODUNOV OU ROE AVEC UNE DISCRETISATION APPROPRIEE DES TERMES NON CONSERVATIFS. DES TESTS BIDIMENSIONNELS COMPRENANT DES ONDES DE DETENTE ET DE CHOC SONT PRESENTES ET MONTRENT QUE L'ALGORITHME TRAITE CORRECTEMENT LES CHOCS FORTS. ON PRESENTE ENSUITE LES RESULTATS DE LA SIMULATION D'UN ECOULEMENT STATIONNAIRE DANS UNE TUYERE ET DES SIMULATIONS FORTEMENT INSTATIONNAIRES DE LITS FLUIDISES DENSES. CES SIMULATIONS ONT MONTRE LA CAPACITE DE L'ALGORITHME A GERER LES ECOULEMENTS OU LE TAUX DE COMPACTAGE DES PARTICULES PEUT AVOISINER LE MAXIMUM. ON ETUDIE ENSUITE UN MODELE HOMOGENE A TROIS EQUATIONS QUI SUPPOSE LA VITESSE DE GLISSEMENT ENTRE PHASES NULLE. LE SYSTEME DE CONVECTION ASSOCIE EST ALORS INCONDITIONNELLEMENT HYPERBOLIQUE ET CONSERVATIF. CECI NOUS PERMET DE RESOUDRE LE PROBLEME DE RIEMANN MONODIMENSIONNEL ASSOCIE ET L'ON MONTRE QUE LE RESPECT DU PRINCIPE DU MAXIMUM EST ASSURE SI LA MODELISATION DE LA PRESSION INTERGRANULAIRE EST ADEQUATE. ON CHOISIT DE METTRE EN UVRE UN SCHEMA RECEMMENT PROPOSE POUR LA RESOLUTION DES SYSTEMES HYPERBOLIQUES COMPLEXES. DES SIMULATIONS BIDIMENSIONNELLES SONT PRESENTEES ET COMPAREES AVEC LES RESULTATS OBTENUS PAR LE MODELE A DEUX FLUIDES A QUATRE EQUATIONS

AIAA Journal

Author : American Institute of Aeronautics and Astronautics
Publisher :
ISBN 13 :
Total Pages : 820 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis AIAA Journal by : American Institute of Aeronautics and Astronautics

Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 1999 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

SIMULATION NUMERIQUE LAGRANGIENNE ET MODELISATION EULERIENNE D'ECOULEMENTS DIPHASIQUES GAZ-PARTICULES EN CANAL VERTICAL

Author : MARC.. SAKIZ
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.:/5 (869 download)

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Book Synopsis SIMULATION NUMERIQUE LAGRANGIENNE ET MODELISATION EULERIENNE D'ECOULEMENTS DIPHASIQUES GAZ-PARTICULES EN CANAL VERTICAL by : MARC.. SAKIZ

Download or read book SIMULATION NUMERIQUE LAGRANGIENNE ET MODELISATION EULERIENNE D'ECOULEMENTS DIPHASIQUES GAZ-PARTICULES EN CANAL VERTICAL written by MARC.. SAKIZ and published by . This book was released on 1999 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF DE CE TRAVAIL EST D'AMELIORER LA COMPREHENSION ET LA MODELISATION DES ECOULEMENTS DIPHASIQUES GAZ-SOLIDE EN CANAL VERTICAL, A PARTIR DE SIMULATIONS NUMERIQUES. DEUX METHODES DE CALCUL SONT UTILISEES : UNE APPROCHE LAGRANGIENNE (SUIVI INDEPENDANT DE LA TRAJECTOIRE DE CHAQUE PARTICULE) ET UNE APPROCHE EULERIENNE D'ORDRE 2 (RESOLUTION DIRECTE D'EQUATIONS SUR LA CONCENTRATION, LA VITESSE MOYENNE ET LES CONTRAINTES CINETIQUES). LA MISE EN EQUATIONS EULERIENNES DU MOUVEMENT DES PARTICULES (EQUATIONS D'EVOLUTION ET CONDITIONS LIMITES) EST OBTENUE PAR UNE METHODE DE TYPE CINETIQUE DES GAZ (AVEC PRISE EN COMPTE DE LA ROTATION). LES CARACTERISTIQUES DE LA PHASE DISPERSEE SONT CHOISIES DE TELLE SORTE QUE L'INFLUENCE DE LA TURBULENCE DU FLUIDE SUR LES PARTICULES SOIT NEGLIGEABLE, DE MEME QUE CELLE DES PARTICULES SUR LE FLUIDE. LES SIMULATIONS LAGRANGIENNES SONT UTILISEES POUR ANALYSER FINEMENT LES DIFFERENTS MECANISMES DE L'ECOULEMENT : INTERACTION FLUIDE/PARTICULE, COLLISIONS PARTICULE/PARTICULE, REBONDS CONTRE LA PAROI. LES EFFETS DE LA ROTATION, DU FROTTEMENT ENTRE PARTICULES ET DE LA PORTANCE SONT AUSSI ETUDIES. PARALLELEMENT, CES RESULTATS DE SIMULATION SERVENT A VALIDER INDEPENDAMMENT CHACUNE DES HYPOTHESES NECESSAIRES A L'ETABLISSEMENT DU MODELE EULERIEN ET A EVALUER EXACTEMENT L'ERREUR QU'ELLES APPORTENT. LES LOIS DE FERMETURE CLASSIQUES SONT TESTEES (CONDITIONS LIMITES, TRAINEE, COLLISIONS, DISPERSION DES CONTRAINTES), ET DES MODIFICATIONS SONT EVENTUELLEMENT PROPOSEES ET VALIDEES. ENFIN, LA COMPARAISON DIRECTE DES PROFILS OBTENUS PAR LES METHODES EULERIENNE ET LAGRANGIENNE PERMET DE TESTER LE MODELE EULERIEN COMPLET ET DE DISCUTER DE SON DOMAINE DE VALIDITE.

Active Subspaces

Author : Paul G. Constantine
Publisher : SIAM
ISBN 13 : 1611973864
Total Pages : 105 pages
Book Rating : 4.6/5 (119 download)

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Book Synopsis Active Subspaces by : Paul G. Constantine

Download or read book Active Subspaces written by Paul G. Constantine and published by SIAM. This book was released on 2015-03-17 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists and engineers use computer simulations to study relationships between a model's input parameters and its outputs. However, thorough parameter studies are challenging, if not impossible, when the simulation is expensive and the model has several inputs. To enable studies in these instances, the engineer may attempt to reduce the dimension of the model's input parameter space. Active subspaces are an emerging set of dimension reduction tools that identify important directions in the parameter space. This book describes techniques for discovering a model's active subspace and proposes methods for exploiting the reduced dimension to enable otherwise infeasible parameter studies. Readers will find new ideas for dimension reduction, easy-to-implement algorithms, and several examples of active subspaces in action.

Finite Volumes for Complex Applications IX - Methods, Theoretical Aspects, Examples

Author : Robert Klöfkorn
Publisher : Springer Nature
ISBN 13 : 3030436519
Total Pages : 727 pages
Book Rating : 4.0/5 (34 download)

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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.

Hyperbolic Problems: Theory, Numerics, Applications

Author : Michael Fey
Publisher : Birkhäuser
ISBN 13 : 3034887248
Total Pages : 514 pages
Book Rating : 4.0/5 (348 download)

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Book Synopsis Hyperbolic Problems: Theory, Numerics, Applications by : Michael Fey

Download or read book Hyperbolic Problems: Theory, Numerics, Applications written by Michael Fey and published by Birkhäuser. This book was released on 2012-12-06 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Infotext]((Kurztext))These are the proceedings of the 7th International Conference on Hyperbolic Problems, held in Zürich in February 1998. The speakers and contributors have been rigorously selected and present the state of the art in this field. The articles, both theoretical and numerical, encompass a wide range of applications, such as nonlinear waves in solids, various computational fluid dynamics from small-scale combustion to relativistic astrophysical problems, multiphase phenomena and geometrical optics. ((Volltext))These proceedings contain, in two volumes, approximately one hundred papers presented at the conference on hyperbolic problems, which has focused to a large extent on the laws of nonlinear hyperbolic conservation. Two-fifths of the papers are devoted to mathematical aspects such as global existence, uniqueness, asymptotic behavior such as large time stability, stability and instabilities of waves and structures, various limits of the solution, the Riemann problem and so on. Roughly the same number of articles are devoted to numerical analysis, for example stability and convergence of numerical schemes, as well as schemes with special desired properties such as shock capturing, interface fitting and high-order approximations to multidimensional systems. The results in these contributions, both theoretical and numerical, encompass a wide range of applications such as nonlinear waves in solids, various computational fluid dynamics from small-scale combustion to relativistic astrophysical problems, multiphase phenomena and geometrical optics.

Comptes rendus de l'Académie des sciences

Author :
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.X/5 (6 download)

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Book Synopsis Comptes rendus de l'Académie des sciences by :

Download or read book Comptes rendus de l'Académie des sciences written by and published by . This book was released on 1997 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Numerical Approximation of Hyperbolic Systems of Conservation Laws

Author : Edwige Godlewski
Publisher : Springer Nature
ISBN 13 : 1071613448
Total Pages : 846 pages
Book Rating : 4.0/5 (716 download)

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Book Synopsis Numerical Approximation of Hyperbolic Systems of Conservation Laws by : Edwige Godlewski

Download or read book Numerical Approximation of Hyperbolic Systems of Conservation Laws written by Edwige Godlewski and published by Springer Nature. This book was released on 2021-08-28 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is devoted to the theory and approximation by finite volume methods of nonlinear hyperbolic systems of conservation laws in one or two space variables. It follows directly a previous publication on hyperbolic systems of conservation laws by the same authors. Since the earlier work concentrated on the mathematical theory of multidimensional scalar conservation laws, this book will focus on systems and the theoretical aspects which are needed in the applications, such as the solution of the Riemann problem and further insights into more sophisticated problems, with special attention to the system of gas dynamics. This new edition includes more examples such as MHD and shallow water, with an insight on multiphase flows. Additionally, the text includes source terms and well-balanced/asymptotic preserving schemes, introducing relaxation schemes and addressing problems related to resonance and discontinuous fluxes while adding details on the low Mach number situation.

Acoustics, Aeroacoustics and Vibrations

Author : Fabien Anselmet
Publisher : John Wiley & Sons
ISBN 13 : 1119178398
Total Pages : 529 pages
Book Rating : 4.1/5 (191 download)

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Book Synopsis Acoustics, Aeroacoustics and Vibrations by : Fabien Anselmet

Download or read book Acoustics, Aeroacoustics and Vibrations written by Fabien Anselmet and published by John Wiley & Sons. This book was released on 2016-01-07 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This didactic book presents the main elements of acoustics, aeroacoustics and vibrations. Illustrated with numerous concrete examples linked to solid and fluid continua, Acoustics, Aeroacoustics and Vibrations proposes a selection of applications encountered in the three fields, whether in room acoustics, transport, energy production systems or environmental problems. Theoretical approaches enable us to analyze the different processes in play. Typical results, mostly from numerical simulations, are used to illustrate the main phenomena (fluid acoustics, radiation, diffraction, vibroacoustics, etc.).

Dictionary of Building and Civil Engineering

Author : Don Montague
Publisher : Taylor & Francis
ISBN 13 : 9780419199106
Total Pages : 472 pages
Book Rating : 4.1/5 (991 download)

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Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

An Introduction to Fluid Mechanics and Transport Phenomena

Author : G. Hauke
Publisher : Springer Science & Business Media
ISBN 13 : 1402085370
Total Pages : 301 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis An Introduction to Fluid Mechanics and Transport Phenomena by : G. Hauke

Download or read book An Introduction to Fluid Mechanics and Transport Phenomena written by G. Hauke and published by Springer Science & Business Media. This book was released on 2008-08-26 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the foundations of fluid mechanics and transport phenomena in a concise way. It is suitable as an introduction to the subject as it contains many examples, proposed problems and a chapter for self-evaluation.

Multiscale and Multiresolution Approaches in Turbulence

Author : Pierre Sagaut
Publisher : World Scientific
ISBN 13 : 1848169876
Total Pages : 446 pages
Book Rating : 4.8/5 (481 download)

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Book Synopsis Multiscale and Multiresolution Approaches in Turbulence by : Pierre Sagaut

Download or read book Multiscale and Multiresolution Approaches in Turbulence written by Pierre Sagaut and published by World Scientific. This book was released on 2013 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book aims to provide the reader with an updated general presentation of multiscale/multiresolution approaches in turbulent flow simulations. All modern approaches (LES, hybrid RANS/LES, DES, SAS) are discussed and recast in a global comprehensive framework. Both theoretical features and practical implementation details are addressed. Some full scale applications are described, to provide the reader with relevant guidelines to facilitate a future use of these methods.

A Parallel Finite Volume Algorithm for Large-eddy Simulation of Turbulent Flows

Author : Trong T. Bui
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis A Parallel Finite Volume Algorithm for Large-eddy Simulation of Turbulent Flows by : Trong T. Bui

Download or read book A Parallel Finite Volume Algorithm for Large-eddy Simulation of Turbulent Flows written by Trong T. Bui and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microreaction Technology

Author : M. Matlosz
Publisher : Springer Science & Business Media
ISBN 13 : 3642567630
Total Pages : 584 pages
Book Rating : 4.6/5 (425 download)

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Book Synopsis Microreaction Technology by : M. Matlosz

Download or read book Microreaction Technology written by M. Matlosz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: IMRET 5 featured more than 80 oral and poster communications, covering the entire interdisciplinary field from design, production, modeling and characterization of microreactor devices to application of microstructured systems for production, energy and transportation, including many analytical and biological applications. A particularly strong topic was the investigation of the potential of microstructuring of reactors and systems components for process intensification. Perspectives of combining local, in situ, data acquisition with appropriate microstructuring of actuators and components within chemical and biological devices were explored in order to enhance process performance and facilitate process control.

The General Theory of Homogenization

Author : Luc Tartar
Publisher : Springer Science & Business Media
ISBN 13 : 3642051952
Total Pages : 466 pages
Book Rating : 4.6/5 (42 download)

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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.

River Sedimentation

Author : Silke Wieprecht
Publisher : CRC Press
ISBN 13 : 1317225317
Total Pages : 282 pages
Book Rating : 4.3/5 (172 download)

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Book Synopsis River Sedimentation by : Silke Wieprecht

Download or read book River Sedimentation written by Silke Wieprecht and published by CRC Press. This book was released on 2016-11-30 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment dynamics in fluvial systems is of great ecological, economic and human-health-related significance worldwide. Appropriate management strategies are therefore needed to limit maintenance costs as well as minimize potential hazards to the aquatic and adjacent environments. Human intervention, ranging from nutrient/pollutant release to physical modifications, has a large impact on sediment quantity and quality and thus on river morphology as well as on ecological functioning. Truly understanding sediment dynamics requires as a consequence a multidisciplinary approach.River Sedimentation contains the peer-reviewed scientific contributions presented at the 13th International Symposium on River Sedimentation (ISRS 2016, Stuttgart, Germany, 19-22 September 2016), and includes recent accomplishments in theoretical developments, numerical modelling, experimental laboratory work, field investigations and monitoring as well as management methodologies.

Capillarity and Wetting Phenomena

Author : Pierre-Gilles de Gennes
Publisher : Springer Science & Business Media
ISBN 13 : 0387216561
Total Pages : 298 pages
Book Rating : 4.3/5 (872 download)

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Book Synopsis Capillarity and Wetting Phenomena by : Pierre-Gilles de Gennes

Download or read book Capillarity and Wetting Phenomena written by Pierre-Gilles de Gennes and published by Springer Science & Business Media. This book was released on 2013-03-20 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of capillarity is in the midst of a veritable explosion. What is offered here is not a comprehensive review of the latest research but rather a compendium of principles designed for the undergraduate student and for readers interested in the physics underlying these phenomena.