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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.
181

The distortion of turbulence by irrotational strain.

Tucker, Henry Joseph. January 1970 (has links)
No description available.
182

EFFECTS OF APEX ANGLE VARIATION ON FLOW DEVELOPMENT IN JETS ISSUING FROM DIFFERENT ISOSCELES TRIANGULAR ORIFICES

Azad, Mohammad 15 July 2011 (has links)
Isothermal, incompressible jets of air issuing from sharp-edged isosceles triangular orifices with apex angles of 10°, 20°, 30°, 70° and 160° into still surrounding air, were used to study the effects of apex angle variation on flow development in the jets. Some measurements were made in two round jets issuing from a sharp-edged orifice and from a contoured nozzle. The mean streamwise centreline velocity decay, mass entrainment and spreading results show that the 160° jet, which originates from the orifice with the longest perimeter, has the highest mixing rate in the near flow field. The results also suggest that the 10° jet, which originates from the orifice with the second longest perimeter, has the highest mixing rate in the far field. The results demonstrate that all the triangular jets have higher mixing rates than the round jets, throughout the flow region investigated.
183

Large-Scale Streamwise Turbulent Structures in Hypersonic Boundary Layers

English, Benjamin L. 03 October 2013 (has links)
Prior research in the field of boundary layer turbulence has identified streamwise-elongated large-scale turbulence structures in both low speed compressible and high speed (M=2.0) flow. No experimental work has been done in any flow of M> or =3 in an attempt to identify the presence or quantify the behavior of these structures, nor has any study of favorable pressure gradient or surface roughness element effects on these structures been conducted. This research used high-resolution Particle Imaging Velocimetry in a M = 4.9 blow-down wind tunnel accompanied by a series of data analysis in order to identify the existence of streamwise-elongated large-scale turbulence structures in a hypersonic boundary layer. Furthermore, this study identified physical and statistical behavior which suggests that increasing favorable pressure gradient had a substantial impact on both the structural coherence and relative intensity of these turbulent structures at all boundary layer heights tested. This experiment also identified similar effects on these structures in the lower half of the boundary layer as a result of the introduction of surface roughness elements. Finally, several trends were identified between the averaged turbulence statistics and the behavior of the large-scale streamwise-elongated turbulence structures present in this study.
184

Investigation of the energy spectrum of turbulence in a closed rectangular conduit

Slaughter, George McClellan 08 1900 (has links)
No description available.
185

The extension of rapid distortion theory to stratified shear flows

Baum, Bryan Alan 08 1900 (has links)
No description available.
186

Turbulent velocity distributions in the upper atmosphere

Moseley, William Battle 12 1900 (has links)
No description available.
187

A study of turbulent forced convective heat transfer in an acoustically resonant tube with a slightly changing cross-sectional area

Rudland, Robert Seay 12 1900 (has links)
No description available.
188

Experimental studies of solid/liquid pipe flows

Hardwick, Robert Carlton 05 1900 (has links)
No description available.
189

A study of two-dimensional symmetric and asymmetric turbulent sheer flows.

Patel, Rajnikant Purshottam. January 1970 (has links)
No description available.
190

A two-dimensional jet with small curvature /

Smith, Peter Arnot January 1974 (has links)
No description available.

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