Spray generation from free and half-free jets

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Authors
Vaidyanathan, Rajan
Subjects
Spray
Drops
Jets
Bow sheets
Liquid sheets
Turbulent boundary layers
Advisors
Sarpkaya, T.
Date of Issue
1999-03
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
This is an experimental investigation of the ligament and drop formation at the free surface of wall jets, flowing over sand-roughened plates, and on unbounded two-dimensional jets, discharging into atmosphere. Experiments were conducted with both fresh and simulated sea water. Measurements were made with several high-speed imagers and a pulsating laser system and analyzed through the use of appropriate software. The wall-jet Reynolds number ranged from 3.5x10(exp 4) to 8.5x10(exp 4), the Froude number from 15 to 30, and the Weber number from 3,000 to 7,500. The positions of the transition and primary breakup as well as the characteristics of the ligament forest and droplets were determined from the digitized images and interpreted in terms of the characteristics of the turbulent boundary layer and a phenomenological model based on our observations and measurements. The emphasis has been on the physics of the phenomenon rather than on the development of empirical relationships
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Thesis
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Format
xvi, 57 p.;28 cm.
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Distribution Statement
Approved for public release; distribution is unlimited.
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