Spray generation from free and half-free jets
By: by Rajan Vaidyanathan
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1999
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 57
Description: 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.
Notes: "March 1999".

Thesis advisor(s): T. Sarpkaya.

Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, March 1999.

Includes bibliographical references (p. 55-56).

Approved for public release; distribution unlimited.

Also available online.

Mode of access: World Wide Web.

System requirements: Adobe Acrobat Reader 7.0.

US Navy (USN) author.

dk/dk cc:9116 7/6/99