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Author: Patrick Bontoux
Publisher:
ISBN:
Category :
Languages : fr
Pages : 240
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Book Description
Revue des differentes classes de methodes de resolution des equations de navier stokes, en particulier des methodes aux differences finies de haute precision. mise en equation des problemes modeles: ecoulements visqueux en milieu confine. etude de la convergence de la methode compacte. etude de la stabilite numerique du schema aux directions alternees. developpement d'une extension heuristique de la methode de fourier-von neumann. etude detaillee du probleme de la convection naturelle dans les collecteurs d'energie solaire
Author: Patrick Bontoux
Publisher:
ISBN:
Category :
Languages : fr
Pages : 240
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Book Description
Revue des differentes classes de methodes de resolution des equations de navier stokes, en particulier des methodes aux differences finies de haute precision. mise en equation des problemes modeles: ecoulements visqueux en milieu confine. etude de la convergence de la methode compacte. etude de la stabilite numerique du schema aux directions alternees. developpement d'une extension heuristique de la methode de fourier-von neumann. etude detaillee du probleme de la convection naturelle dans les collecteurs d'energie solaire
Author: Roland Schiestel
Publisher: John Wiley & Sons
ISBN: 0470393467
Category : Science
Languages : en
Pages : 751
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Book Description
This title provides the fundamental bases for developing turbulence models on rational grounds. The main different methods of approach are considered, ranging from statistical modelling at various degrees of complexity to numerical simulations of turbulence. Each of these various methods has its own specific performances and limitations, which appear to be complementary rather than competitive. After a discussion of the basic concepts, mathematical tools and methods for closure, the book considers second order closure models. Emphasis is placed upon this approach because it embodies potentials for clarifying numerous problems in turbulent shear flows. Simpler, generally older models are then presented as simplified versions of the more general second order models. The influence of extra physical parameters is also considered. Finally, the book concludes by examining large Eddy numerical simulations methods. Given the book’s comprehensive coverage, those involved in the theoretical or practical study of turbulence problems in fluids will find this a useful and informative read.
Author: Roger Peyret
Publisher: Springer Science & Business Media
ISBN: 3642859526
Category : Science
Languages : en
Pages : 364
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Book Description
In developing this book, we decided to emphasize applications and to provide methods for solving problems. As a result, we limited the mathematical devel opments and we tried as far as possible to get insight into the behavior of numerical methods by considering simple mathematical models. The text contains three sections. The first is intended to give the fundamen tals of most types of numerical approaches employed to solve fluid-mechanics problems. The topics of finite differences, finite elements, and spectral meth ods are included, as well as a number of special techniques. The second section is devoted to the solution of incompressible flows by the various numerical approaches. We have included solutions of laminar and turbulent-flow prob lems using finite difference, finite element, and spectral methods. The third section of the book is concerned with compressible flows. We divided this last section into inviscid and viscous flows and attempted to outline the methods for each area and give examples.
Author: Corrado Casci
Publisher: Springer Science & Business Media
ISBN: 1468442988
Category : Science
Languages : en
Pages : 438
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Book Description
This volume, published in honor of Prof. Luigi Crocco, appears when Luigi Crocco celebrates his 75th birthday of a life devoted to study, research, and teaching. The events in his life and World War II forced Luigi Crocco, as well as other Italian scientists, to look to foreign countries for the calm haven so vital to study. This notwithstanding, his scientific activity was never inter rupted, and this volume is an acknowledgment of scientists and researchers to his work and life. Prefazione Questo volume in onore del prof. ing. Luigi Crocco vede la luce quando Luigi Crocco compie i 75 anni di una vita dedicata allo studio, alia ricerca e all'insegnamento. a Le vicende della vita, ed anche della 2 guerra mondiale, hanno costretto Luigi Crocco, come altri scienziati italiani, a dover cercare in altri Paesi quella serenita necessaria per dedicarsi allo studio. Ma la sua attivita scientifica non ha avuto interruzioni e questo volume essere la testimonianza di studiosi e di ricercatori alia sua opera e alia sua vita."
Author: Antoine Garapon (physicien).)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 167
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Book Description
UNE METHODE EULERIENNE A MAILLAGE ADAPTATIF EST UTILISEE POUR MODELISER UN ECOULEMENT DE FLUIDE VISQUEUX, INCOMPRESSIBLE ET TURBULENT AUTOUR D'UN PROFIL BIDIMENSIONNEL PLACE SOUS LA SURFACE LIBRE. LA FERMETURE DES EQUATIONS EST ASSUREE PAR LE MODELE DE TURBULENCE DE -. LA DISCRETISATION DES EQUATIONS DE TRANSPORT EST EFFECTUEE PAR LE SCHEMA UNIEXPONENTIEL, L'EQUATION DE PRESSION EST OBTENUE PAR LA RECONSTRUCTION DE RHYE & CHOW, ENFIN, L'ALGORITHME PISO ASSURE LE COUPLAGE VITESSE-PRESSION. L'APPLICATION DE CETTE METHODE A L'ETUDE DE L'ECOULEMENT TRIDIMENSIONNEL AUTOUR D'UNE CARENE DE SERIES 60 CONDUISANT A L'ECHEC, UNE NOUVELLE METHODE DE PRISE EN COMPTE DE LA SURFACE LIBRE A ETE DEVELOPPEE. CETTE METHODE A ETE ENSUITE VALIDEE ET COMPAREE AUX RESULTATS EXPERIMENTAUX ET NUMERIQUES PROVENANT DE L'ATELIER DE TOKYO (1994)
Author:
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 322
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Book Description
Author: Nezit Pierre Pocout
Publisher:
ISBN:
Category :
Languages : fr
Pages : 82
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Book Description
ETUDE DE L'EXISTENCE ET DE L'UNICITE, EN THEORIE DES PETITES PERTURBATIONS, DE CERTAINS ECOULEMENTS DE FLUIDE INCOMPRESSIBLE VISQUEUX OU PARFAIT DONT LA TENSION SUPERFICIELLE EST FONCTION DE VARIABLES D'ESPACE ET DU TEMPS. CAS DES SUBSTANCES PURES ET DES SUBSTANCES IMPURES.
Author: Marcel Arnould
Publisher: CRC Press
ISBN:
Category : Nature
Languages : en
Pages : 648
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Book Description
Author: Mohamed Salah Abid
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
L'AGITATION MECANIQUE DES FLUIDES VISQUEUX EST ETUDIEE DANS LE CAS DE MOBILES PLANS TYPE BIPALE, ANCRE OU BARRIERE ET DE TURBINES RADIALES ET A DISQUES (TURBINE DE RUSHTON). UN CODE DE CALCUL NUMERIQUE 3D, FONDE SUR LA RESOLUTION DES EQUATIONS LOCALES DE CONSERVATION (EQUATIONS DE NAVIER-STOKES) EN REGIME LAMINAIRE, A ETE DEVELOPPE. LES STRUCTURES FINES DES ECOULEMENTS GENERES PAR CES MOBILES DANS UNE CUVE CYLINDRIQUE, ONT ETE ETUDIEES GRACE A L'ETABLISSEMENT DES CHAMPS DE VITESSE, DE CONTRAINTES. LES GRANDEURS CARACTERISTIQUES GLOBALES DES ECOULEMENTS: PUISSANCE D'AGITATION, DEBITS DE POMPAGE ET DE CIRCULATION ONT ETE CALCULEES. LA CONFRONTATION ENTRE LES RESULTATS DE LA SIMULATION NUMERIQUE ET LES DONNEES BIBLIOGRAPHIQUES EST SATISFAISANTE. CETTE ETUDE PROPOSE UN PUISSANT OUTIL POUR L'ANALYSE DE STRUCTURES FINES DES ECOULEMENTS EN CUVE AGITEE AINSI QU'UN MOYEN DE CALCUL ET DE DIMENSIONNEMENT DE PLUSIEURS MOBILES D'AGITATION
Author: André Vouillarmet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 100
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Book Description
