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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.
141

Extension of the ADjoint Approach to a Laminar Navier-Stokes Solver

Paige, Cody 16 July 2013 (has links)
The use of adjoint methods is common in computational fluid dynamics to reduce the cost of the sensitivity analysis in an optimization cycle. The forward mode ADjoint is a combination of an adjoint sensitivity analysis method with a forward mode automatic differentiation (AD) and is a modification of the reverse mode ADjoint method proposed by \citet{Mader:2008:B}. A colouring acceleration technique is presented to reduce the computational cost increase associated with forward mode AD. The forward mode AD facilitates the implementation of the laminar Navier--Stokes (NS) equations. The forward mode ADjoint method is applied to a three-dimensional computational fluid dynamics solver. The resulting Euler and viscous ADjoint sensitivities are compared to the reverse mode Euler ADjoint derivatives and a complex-step method to demonstrate the reduced computational cost and accuracy. Both comparisons demonstrate the benefits of the colouring method and the practicality of using a forward mode AD.
142

The global mars multiscale model : a tool for simulation of climate and weather /

Moudden, Youssef. January 2005 (has links)
Thesis (Ph.D.)--York University, 2005. Graduate Programme in Earth and Space Science. / Typescript. Includes bibliographical references (leaves 113-120). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR11603
143

Numerical study of turbulence transition models

Neroorkar, Kshitij D. January 2007 (has links) (PDF)
Thesis (M.S.)--University of Alabama at Birmingham, 2007. / Description based on contents viewed Feb. 4, 2008; title from title screen. Includes bibliographical references (p. 73-77).
144

Ein blockstrukturiertes Verfahren zur Simulation der Umströmung komplexer Konfigurationen /

Schwarz, Thorsten. January 2005 (has links)
Techn. Universiẗat, Diss., 2005--Braunschweig.
145

Résolution de problèmes aux limites à l'aide de méthodes itératives hiérarchiques à préconditionneur variable /

El Maliki, Abderrahman. January 2007 (has links) (PDF)
Thèse (Ph. D.)--Université Laval, 2007. / Bibliogr.: f. 155-160. Publié aussi en version électronique dans la Collection Mémoires et thèses électroniques.
146

Untersuchungen zur numerischen Lösung der Navier-Stokes-Gleichungen mit Wellendigital-Prinzipien

Mengel, André January 2007 (has links)
Zugl.: Bochum, Univ., Diss., 2007
147

On optimum convergence rates of the Crank-Nicholson scheme to the stokes initial value problem in higher order function spaces using realistic data /

Rodenkirchen, Jürgen. January 1995 (has links)
University-Gesamthochsch., Diss.--Paderborn, 1995.
148

Les équations de Navier-Stokes nonlinéaires dans IR [exposant 3]

Grira, Sofiane. January 1997 (has links)
Thèses (M.Sc.)--Université de Sherbrooke (Canada), 1997. / Titre de l'écran-titre (visionné le 20 juin 2006). Publié aussi en version papier.
149

Adaptive control of error and stability of h-p approximations of the transient Navier-Stokes equations /

Prudhomme, Serge Michaël, January 1999 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 1999. / Vita. Includes bibliographical references (leaves 172-183). Available also in a digital version from Dissertation Abstracts.
150

Berechnung der Stator-Rotor-Wechselwirkung in Turbomaschinen

Jung, Alexander. January 2000 (has links)
Stuttgart, Univ., Diss., 2000.

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