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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.
21

Numerical modeling in fluid mechanics

Olmstead, Bruce Ringsby 12 1900 (has links)
No description available.
22

Performance analysis of a rotary regenerator

Barrientos-Mendoza, Humberto Eduardo 05 1900 (has links)
No description available.
23

Global error computation with Runge-Kutta methods

Duckers, R. R. January 1984 (has links)
No description available.
24

Discontinuous Galerkin methods for Friedrichs systems with irregular solutions

Jensen, Max January 2005 (has links)
This work is concerned with the numerical solution of Friedrichs systems by discontinuous Galerkin finite element methods (DGFEMs). Friedrichs systems are boundary value problems with symmetric, positive, linear first-order partial differential operators and allow the unified treatment of a wide range of elliptic, parabolic, hyperbolic and mixed-type equations. We do not assume that the exact solution of a Friedrichs system belongs to a Sobolev space, but only require that it is contained in the associated graph space, which amounts to differentiability in the characteristic direction. We show that the numerical approximations to the solution of a Friedrichs system by the DGFEM converge in the energy norm under hierarchical h- and p- refinement. We introduce a new compatibility condition for the boundary data, from which we can deduce, for instance, the validity of the integration-by-parts formula. Consequently, we can admit domains with corners and allow changes of the inertial type of the boundary, which corresponds in special cases to the componentwise transition from in- to outflow boundaries. To establish the convergence result we consider in equal parts the theory of graph spaces, Friedrichs systems and DGFEMs. Based on the density of smooth functions in graph spaces over Lipschitz domains, we study trace and extension operators and also investigate the eigensystem associated with the differential operator. We pay particular attention to regularity properties of the traces, that limit the applicability of energy integral methods, which are the theoretical underpinning of Friedrichs systems. We provide a general framework for Friedrichs systems which incorporates a wide range of singular boundary conditions. Assuming the aforementioned compatibility condition we deduce well-posedness of admissible Friedrichs systems and the stability of the DGFEM. In a separate study we prove hp-optimality of least-squares stabilised DGFEMs.
25

Multivalue methods for solving differential algebraic problems of index 1, 2 and 3

Kerr, M. Unknown Date (has links)
No description available.
26

Numerical methods for SDEs - with variable stepsize implementation

Herdiana, Ratna Unknown Date (has links)
No description available.
27

Computer aided analysis of the casting process

Ali, Amer F. January 1993 (has links)
Thesis (M.S.)--Ohio University, November, 1993. / Title from PDF t.p.
28

Numerical computations on free-surface flow /

Chen, Tong. January 1999 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1999. / Includes bibliographical references (leaves 77-83).
29

Numerical methods in reaction rate theory /

Frankcombe, Terry James. January 2002 (has links)
Thesis (Ph. D.)--University of Queensland, 2002. / Includes bibliographical references.
30

Discrete gradient method in solid mechanics

Qian, Jing. Lu, Jia, January 2009 (has links)
Thesis (Ph.D.)--University of Iowa, 2009. / Thesis supervisor: Jia Lu. Includes bibliographical references (leaves 123-131).

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