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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

Experimental investigations of vortex flow in converging-diverging cylindrical shock waves

Wong, Sze-Wei. January 1980 (has links)
No description available.
22

Hugoniot data for lexan.

Kraak, Gerald Walter January 1970 (has links)
No description available.
23

Tomographic reconstruction of shock layer flows

Faletic, Rado, Rado.Faletic@anu.edu.au January 2005 (has links)
The tomographic reconstruction of hypersonic flows faces two challenges. Firstly, techniques used in the past, such as the Direct Fourier Method (DFM) or various backprojection techniques, have only been able to reconstruct areas of the flow which are upstream of any opaque objects, such as a model. Secondly, shock waves create sharp discontinuities in flow properties, which can be difficult to reconstruct both in position and in magnitude. This thesis will present a reconstruction method, utilising geometric ray-tracing and a sparse matrix iterative solver, which is capable of overcoming both of these challenges. It will be shown, through testing with phantom objects described in imaging and tomographic literature, that the results are comparable to those produced by the DFM technique. Finally, the method will be used to reconstruct three dimensional density fields from interferometric shock tunnel images, with good resolution.
24

Transmission and attenuation of the primary seismic wave, [delta]=100 to 600 KM

Long, L. T. (Leland Timothy) 08 November 1967 (has links)
The character of the primary seismic wave in the range of distances between 100 and 600 km is affected by such factors as the nature of the source, exponential attenuation, crustal structure, type of wave propagation, recording site geology and instrument response. The first arrivals from the GNOME and SHOAL nuclear explosions were analyzed to show the important effects of the above factors. Crusta1 structures were developed to examine the type of wave propagation, geometrical attenuation, and Q versus depth structure. Within the frequency bands delineated by the instrument response, above 2 cps, and the reliable source energies, exponential attenuation and surface geology explained the major spectral variations in the first arrivals. Amplitude variations were explained almost entirely by geometrical and exponential attenuation. Techniques for measuring exponential attenuation were developed and applied. The Q values obtained were primarily between 100 and 200. / Graduation date: 1968
25

An adaptive grid algorithm for computational shock hydrodynamics

Quirk, J. J. January 1991 (has links)
Thesis (doctoral)--Cranfield Institute of Technology, 1991. / BLDSC reference no.: DX94724.
26

Investigation of shock wave attenuation in porous materials

Boey, Chung Wai. January 2009 (has links) (PDF)
Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, December 2009. / Thesis Advisor(s): Hixson, Robert S. Second Reader: McNelley, Terry. "December 2009." Description based on title screen as viewed on January 27, 2010. Author(s) subject terms: Porous foams, dynamic compaction, multi-layered armor, ballistic performance, shock wave attenuation. Includes bibliographical references (p. 89-90). Also available in print.
27

Water drop deformation and fragmentation due to shock wave impact.

Krauss, William Edward, January 1970 (has links)
Thesis--University of Florida. / Manuscript copy. Description based on print version record. Vita. Bibliography: leaves 79-80.
28

Shock waves in elastic and elastic-plastic media

Broberg, K. B. January 1956 (has links)
Thesis--Tekniska Högskolan, Stockholm. / Extra t.p., with thesis statement, inserted. Bibliography: p. 133-139.
29

One-dimensional shock wave formation by an accelerating piston /

Mann, Michael J. January 1970 (has links)
Thesis (Ph. D.)--Ohio State University, 1970. / Includes bibliographical references (leaves 92-94). Available online via OhioLINK's ETD Center.
30

An experimental study of spherical gaseous detonation waves.

Knystautas, R. (Romas) January 1968 (has links)
No description available.

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