Author: Gabriel TalbotPublisher:
ISBN:
Category :
Languages : fr
Pages : 160
Book Description
Contribution à la résolution des écoulements visqueux incompressibles par la méthode des éléments finis
Author: Gabriel TalbotCertaines méthodes d'éléments finis mixtes pour les écoulements visqueux incompressibles
Author: Hassan Ouhamou El ManouziPublisher:
ISBN:
Category :
Languages : fr
Pages : 140
Book Description
Résolution numérique des équations de Navier-Stokes avec une méthode qui assure la condition d'incompressibilité, tandis que la vitesse tangentielle est relaxée par l'introduction du gradiant de la vitesse comme nouvelle variableau lieu de la fonction tourbillon. On calcule les contraintes visqueuses, le tourbillon et la pression du fluide. On étudie le problème de Navier-Stokes linéaire, et on établit l'existence et les propriétés d'une solution approchée, au voisinage d'une solution non dégénérée
Masters Theses in the Pure and Applied Sciences
Author: Wade H. ShaferPublisher: Springer Science & Business Media
ISBN: 1461534747
Category : Science
Languages : en
Pages : 421
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 34 (thesis year 1989) a total of 13,377 theses titles from 26 Canadian and 184 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 34 reports theses submitted in 1989, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Méthodes d'éléments finis adaptatives pour les écoulements visqueux incompressibles
Author: Jean-François HétuImplementation of Finite Element Methods for Navier-Stokes Equations
Author: F. ThomassetPublisher: Springer Science & Business Media
ISBN: 3642870473
Category : Science
Languages : en
Pages : 168
Book Description
In structure mechanics analysis, finite element methods are now well estab lished and well documented techniques; their advantage lies in a higher flexibility, in particular for: (i) The representation of arbitrary complicated boundaries; (ii) Systematic rules for the developments of stable numerical schemes ap proximating mathematically wellposed problems, with various types of boundary conditions. On the other hand, compared to finite difference methods, this flexibility is paid by: an increased programming complexity; additional storage require ment. The application of finite element methods to fluid mechanics has been lagging behind and is relatively recent for several types of reasons: (i) Historical reasons: the early methods were invented by engineers for the analysis of torsion, flexion deformation of bearns, plates, shells, etc ... (see the historics in Strang and Fix (1972) or Zienckiewicz (1977». (ii) Technical reasons: fluid flow problems present specific difficulties: strong gradients,l of the velocity or temperature for instance, may occur which a finite mesh is unable to properly represent; a remedy lies in the various upwind finite element schemes which recently turned up, and which are reviewed in chapter 2 (yet their effect is just as controversial as in finite differences). Next, waves can propagate (e.g. in ocean dynamics with shallowwaters equations) which will be falsely distorted by a finite non regular mesh, as Kreiss (1979) pointed out. We are concerned in this course with the approximation of incompressible, viscous, Newtonian fluids, i.e. governed by N avier Stokes equations.
CONTRIBUTION A L'ETUDE D'ECOULEMENTS INCOMPRESSIBLES VISQUEUX EN PRESENCE D'UNE SURFACE LIBRE
Author: Antoine Garapon (physicien).)Publisher:
ISBN:
Category :
Languages : fr
Pages : 167
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)
Simulation numérique d'écoulements visqueux incompressibles par des méthodes d'éléments finis mixtes
Author: Patrick Le TallecCertaines méthodes d'éléments finis mixtes pour les écoulements visqueux incompressibles
Author: Hassan Ouhamou El ManouziPublisher:
ISBN:
Category :
Languages : fr
Pages : 140
Book Description
FEW APPLICATIONS OF THE FINITE ELEMENT METHOD TO PROBLEMS OF FLUID MECHANICS AND THE PHYSICS OF SOLIDS
Author: Enrique Fernandez CaraPublisher:
ISBN: 9782726102725
Category :
Languages : fr
Pages : 207
Book Description
ETUDE DE CERTAINS ASPECTS DE LA THEORIE DES TOURBILLONS STATIONNAIRES AXISYMETRIQUES DANS UN FLUIDE PARFAIT. CALCUL DES CARENES A TRAINEE MINIMALE DANS DES ECOULEMENTS VISQUEUX INCOMPRESSIBLES EN REGIME STATIONNAIRE. ETUDE DE L'EXISTENCE DE SOLUTIONS D'UN PROBLEME PARABOLIQUE NON LINEAIRE DECRIVANT LE COMPORTEMENT ELECTRIQUE D'UN SEMI-CONDUCTEUR EN SILICIUM ET DE L'APPROXIMATION NUMERIQUE DU PROBLEME DE LA DIFFUSION NON LINEAIRE DES IMPURETES DANS LE SILICIUM
Author: Abdelmalek Zine