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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.
11

Particle image velocimetry study of two dimensional transitional plane wall jet

Unknown Date (has links)
A laminar wall jet undergoing transition is investigated using Particle Image Velocimetry (PIV) technique. The plane wall jet is issued from a rectangular channel with a parabolic velocity profile at the exit. The Reynolds number, based on the exit mean velocity and the nozzle width is 1450. To understand the global flow field, laser sheet/smoke flow visualizations are made along stream wise, spanwise, and cross-stream directions. To correlate the instantaneous vorticity distribution with the surface pressure fluctuations, surface pressure measurements are made. Under the present experimental conditions, it is found that the transition process is similar for both unforced and forced cases. Due to the necessity to obtain both temporal and spatial information of the flow field, a forced wall jet is considered for an extensive investigation. The instantaneous velocity and vorticity fields are measured by phase locking the flow field. These measurements provided the basis to understand the mechanisms involved in the formation of the initial vortex in the inner region of the wall jet and the subsequent interactions between the free shear layer (outer region) and the boundary layer (inner region) vortices. Results show that, under the influence of the shear layer vortex, the local boundary layer separates, becomes inviscidly unstable, and forms a vortex in the inner region. Once this inner region vortex is formed, both the free shear layer vortex and the boundary layer vortex form a couple and convect downstream. The mutual interactions between these inner and outer region vortices dominate the transition process. Further downstream, the emergence of the three dimensional structure in the shear layer initiates the complete breakdown of the flow. / Source: Dissertation Abstracts International, Volume: 54-11, Section: B, page: 5897. / Major Professor: Chiang Shih. / Thesis (Ph.D.)--The Florida State University, 1993.
12

A linear stability analysis of the destabilizing effects of wall permeability in channel flows /

Tilton, Nils G. January 2006 (has links)
No description available.
13

Algorithms for efficient dynamics simulation of space robotic systems

Wong, Pang Fei January 2006 (has links)
No description available.
14

The development of a distributed methodlogy for process simulation with applications in pipe flow /

Cohen, Steven G. January 1990 (has links)
No description available.
15

Experimental and computational studies of loop heat pipes

Atabaki, Nima. January 2006 (has links)
No description available.
16

Photothermal imaging of optical polymers, polymer metal interfaces and photodegradation of polyvinyl chloride

Prystay, Marc C. (Marc Christopher) January 1993 (has links)
No description available.
17

Time-dependent melting and freezing heat transfer in multiple phase change materials

Gong, Zhen-Xiang. January 1996 (has links)
No description available.
18

Numerical modeling of coplanar single-chamber micro solid-oxide fuel cells

Bourque, Gabriel January 2009 (has links)
No description available.
19

Heat transfer in pipes conveying slurries of microencapsulated phase-change materials in water

Scott, David A., 1972- January 2006 (has links)
No description available.
20

The change in momentum of a two-dimensional, incompressible, turbulent jet due to a wire screen normal to the flow.

Bruce, Douglas Malcolm. January 1966 (has links)
No description available.

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