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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

A numerical solution of the Navier-Stokes equation in a rectangular basin

May, Robert (Robert L.) January 1978 (has links) (PDF)
No description available.
42

Numerical simulation of 2D flow past a dimpled cylinder using a pseudospectral method

Kotovshchikova, Marina 08 January 2007 (has links)
A numerical simulation of steady and unsteady two-dimensional flows past cylinder with dimples based on highly accurate pseudospectral method is the subject of the present thesis. The vorticity-streamfunction formulation of two-dimensional incompressible Navier-Stokes equations with no-slip boundary conditions is used. The system is formulated on a unit disk using curvilinear body fitted coordinate system. Key issues of the curvilinear coordinate transformation are discussed, to show its importance in properly defined node distribution. For the space discretization of the governing system the Fourier-Chebyshev pseudospectral approximation on a unit disk is implemented. To handle the singularity at the pole of the unit disk the approach of defining the computational grid proposed by Fornberg was implemented. Two algorithms for solving steady and unsteady problems are presented. For steady flow simulations the non-linear time-independent Navier-Stokes problem is solved using the Newton's method. For the time-dependent problem the semi-implicit third order Adams-Bashforth/Backward Differentiation scheme is used. In both algorithms the fully coupled system with two no-slip boundary conditions is solved. Finally numerical result for both steady and unsteady solvers are presented. A comparison of results for the smooth cylinder with those from other authors shows good agreement. Spectral accuracy is demonstrated using the steady solver. / February 2007
43

Zur Numerik der Gleichungen von Navier-Stokes /

Varnhorn, Werner. January 1985 (has links)
Paderborn, University, Fachb. Mathematik-Informatik, Diss. 1985.
44

Quelques problèmes aux limites pour des équations de Navier-Stokes compressibles et isentropiques

Novo, Sébastien. Novotný, Antonin. January 2002 (has links)
Thèse de doctorat : Sciences : Mathématiques Appliquées : Toulon : 2002. / Thèse publiée sur le site TEL. Bibliographie p.243-247.
45

Quelques problèmes aux limites pour des équations de Navier-Stokes compressibles et isentropiques

Novo, Sébastien. Novotný, Antonin. January 2002 (has links)
Thèse de doctorat : Sciences : Mathématiques Appliquées : Toulon : 2002. / Titre provenant du cadre-titre. Bibliographie p.243-247.
46

Modélisation numérique de la thermoaéraulique du bâtiment des modèles CFD à une approche hybride volumes finis / zonale /

Bellivier, Axel Inard, Christian January 2004 (has links)
Thèse doctorat : Mécanique des fluides : La Rochelle : 2004. / Bibliogr. p. 223-229.
47

Contrôle optimal par simulation aux grandes échelles d'un écoulement turbulent

El Shrif, Ali Skali-Lami, Salaheddine Cordier, Laurent January 2008 (has links) (PDF)
Thèse de doctorat : Mécanique et énergétique : INPL : 2008. / Titre provenant de l'écran-titre.
48

The De Giorgi's method as applied to the regularity theory for incompressible Navier-Stokes equations

Chan, Chi Hin, 1979- 20 September 2012 (has links)
The first part of this thesis is devoted to a regularity criterion for solutions of the Incompressible Navier-Stokes equations in terms of regularity of the solutions along the streamlines. More precisely, we prove that we can ensure the full regularity of a given suitable weak solution provided we have good control on the second derivative of the velocity along the direction of the streamlines of the fluid. In the second part of this thesis, we will show that the global regularity of a suitable weak solution u for the incompressible Navier-Stokes equations holds under the condition that [mathematical equation] is integrable in space time variables. / text
49

THE TRANSLATION OF A SPHERE AT LOW REYNOLDS NUMBER IN THE VICINITY OF A FREE SURFACE

Ruetmann, Mihkel, 1940- January 1970 (has links)
No description available.
50

An improved hybrid navier-stokes/full-potential method for computation of unsteady compressible viscous flows

Mello, Olympio Achilles de Faria 12 1900 (has links)
No description available.

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