Effects of an embedded vortex on a single film-cooling jet in a turbulent boundary layer
By: Warren W. Williams
Contributors: Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1988
Place of publication: Monterey, California
Language: eng
Number of pages: 202
Subjects: Efficiency; Turbulent boundary layer; Mechanical engineering; Thermal stresses; Turbines; Turbomachines
Description: Effects of embedded longitudinal vortices on heat transfer in a turbulent boundary layer film cooled from a single injections hole are discussed. Film coolant was injected at blowing ratios 0.50 to 1.50 at a freestream velocity of 10 m/s. A single longitudinal vortex was induced upstream of the film-cooling holes. Heat transfer measurement were made downstream of injection. Flow visualization tests were conducted after the injectant was contaminated with smoke. Surveys of mean velocity and mean temperature were also made in different spanwise normal planes. For all blowing ratios examined, the embedded vortices cause significant alterations to wall heat transfer and to film-cooling distributions. Embedded vortex, Film-cooling single jet, Heat transfer, Endwall secondary flows. (jes)
Notes: Thesis advisor(s): Ligrani, Phillip M.

DTIC Descriptors: Film Cooling, Heat Transfer, Turbulent Boundary Layer, Boundary Layer, Coolants, Distribution, Embedding, Films, Flow Visualization, Free Stream, Holes Openings, Injection, Mean, Measurement, Ratios, Secondary Flow, Smoke, Surveys, Temperature, Test Methods, Velocity, Vortices, Walls

"June 1988."

Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, June 1988.

Includes bibliographical references (p. 199-200)

"Approved for public release, distribution unlimited-Cover."

Also available online.

Mode of access: World Wide Web.

US Navy (USN) author.