Thesis (Ph. D.)--University of California, San Diego, 1973. / Includes bibliographical references (leaves 110-113).

Thesis (Ph. D.)--Massachusetts Institute of Technology, 1966. / Includes bibliographical references (leaves 153).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1965. / Typescript. Vita. Includes bibliographical references.

Thesis (M. Phil.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1985. / Vita. Abstract. Includes bibliographical references (leaves 86-90). Also available via the Internet

Dissertation (Ph.D.) -- Worcester Polytechnic Institute. / Keywords: Turbulence; mixing length; vortical structure. Includes bibliographical references (p.).

Thesis (Honors)--College of William and Mary, 2009. / Includes bibliographical references (leaves 31-33). Also available via the World Wide Web.

Thesis (M.S.E.)--University of Delaware, 2008. / Principal faculty advisor: James T. Kirby, Dept. of Civil & Environmental Engineering. Includes bibliographical references.

In this dissertation, the early development of turbulent vortex rings at two Reynolds numbers is studied using two-dimensional and Stereoscopic Particle Image Velocimetry. In the late 1980s? a similarity theory of turbulent vortex rings was proposed and tested primarily using a twochannel tracking Laser Doppler Velocimeter. However, due to the limitations of the experimental technique the tests were inconclusive and important assumptions could not be checked. Since single-point measurements were used, turbulent vortex ring structures could only be inferred using a complex signal-analysis technique. In the present study, two-dimensional and stereoscopic Particle Image Velocimetry techniques provide spatial and temporal resolved measurements of the full field of the cross-section of turbulent vortex rings, from which a more rigorous investigation of the similarity theory is possible. Since the region over which the similarity theory appears to hold starts at about 2.5 orifice diameters downstream, this study focusses on the early development region from this point to ten diameters downstream. Finally, the ensembleaveraged turbulent ring velocity contours, vorticity contours, pressure field contours, as well as Reynolds stresses and turbulence production contours, are presented. The effects of the turbulent vortex ring position dispersion and tilting angle variation on the measurement results are also studied and quantified. An effort is also made to reconstruct a three-dimensional turbulent vortex ring velocity field by adopting Taylor?s hypothesis. Some important features are successfully captured. An azimuthal-averaging method is also developed in an attempt to estimate the turbulence quantities in cylindrical coordinates. However, because of various limitations, the three-dimensional reconstruction method is not perfect, and room for future improvement is discussed.

The aim of this diploma thesis is to deepen the knowledge in the field of drain liquid from vessel with free surface due to the effluent jet with defined profile. Formation of complete suction vortex is taken place gradually depending on the starting conditions. In the diploma thesis basic relations in liquids considering whirl are described and the types of vortex are divided on the bases of circulation intensity. In the experimental part of diploma thesis the possibilities of liquid level prediction are searched for, where the whirl is formed depending on the size of effluent jet.