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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.

Vortex flow in a thin cylindrical chamber and its applications in fluid amplifier technology.

Kwok, Chi Kai Clyde January 1966 (has links)
No description available.

Vortex physics of unconventional superconductors Ginzburg-Lindau theory /

Li, Qunqing. January 2000 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 109-120).

Stationary vortices and persistent turbulence /

Balle, Gregory J. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 92-96).

On the formation of vortex breakdown over delta wings /

Sutthiphong Srigrarom. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 185-191).

Accoustic properties of toroidal bubbles and contruction of a large apparatus /

Harris, Ashley M. January 2004 (has links) (PDF)
Thesis (M.S. in Applied Physics)--Naval Postgraduate School, March 2004. / Thesis advisor(s): Bruce C. Denardo. Includes bibliographical references (p. 59-60). Also available online.

Near field development of buoyancy driven flows

Bond, Derek P. January 2002 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: near field; starting flow; buoyant flow; unsteady flow. Includes bibliographical references (p. 81-82).

Dynamics of tornado-like vortices /

Deng, Litao, Unknown Date (has links)
Thesis (Ph. D.)--University of Oklahoma, 1993. / Includes bibliographical references (leaves 296-305).

Experimental investigation of vortex shedding in high Reynolds number flow over compressor blades in cascade /

Lim, Choon Peng. January 2003 (has links) (PDF)
Thesis (M.S. in Aeronautical Engineering)--Naval Postgraduate School, March 2003. / Thesis advisor(s): Garth V. Hobson, Raymond P. Shreeve. Includes bibliographical references (p. 81-82). Also available online.

A water tunnel investigation of a small scale rotor operating in the vortex ring state /

Rumsey, Charles B. January 2003 (has links) (PDF)
Thesis (M.S. in Applied Physics)--Naval Postgraduate School, June 2003. / Thesis advisor(s): E. Roberts Wood, Steven R. Baker. Includes bibliographical references (p. 59-60). Also available online.


DAGAN, ARIE. January 1986 (has links)
Turbulence has long been believed to be associated with the behavior of vorticity. Ever since experiments showed clearly the presence of vortex structures in turbulent flow, concentrated efforts have tried to identify the important dynamics of three-dimensional vortex flow. In particular, conjectures abound about the importance of vortex stretching and vortex line reconnection. Numerical experiments based on ad hoc assumptions on the nature of the cores of vortex filaments have shown interesting behavior. In some cases, it has been argued that singularities develop in finite time and in other cases that the filament exhibits fractal dimensions. These inviscid calculations also show that filaments of opposite signed vorticity tend to pair up and that the local flow is two-dimensional. Consequently, we have begun a study that clarifies the behavior of a pair of counter-rotating vortices in the presence of an external strain flow that would be induced by the presence of vorticity well away from the local two-dimensional plane. So far, the results are quite interesting and depend on the nature of the strain flow. We always assume that the horizontal component of the strain pushes the filaments together. It is the other two components that then affect the results. Without any strain along the axes of the filaments, the vortex cores are pulled into parallel elliptical shapes. Eventually, the cores are so deformed that they become unstable in the same way a parallel shear flow would and the vortex structures disrupt. This phenomenon will be missed by filament codes that assume the cores remain circular. On the other hand, a strain component along the filaments increases the vorticity but keeps the core structure mostly circular. As the cores approach one another, viscous effects overcome the increase in vorticity due to stretching and the cores dissipate away.

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