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Effect of vortex circulation on injectant from a single film-cooling hole and a row of film-cooling holes in a turbulent boundary layer: part 1: injection beneath the vortex downwash

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Author
Craig, Douglas William
Date
1989-06
Advisor
Ligrani, Phillip M.
Subramanian, Chelakara S.
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Abstract
The effects of longitudinal vortices on film-cooling injectant from a single injection hole and from a row of injection holes in a turbulent boundary layer are investigated. Attention is focused on the effects of vortex circulation when the injection hole is located beneath the vortex downwash. Heat transfer measurements, mean velocity and mean temperature surveys, and surface flow visualization results are discussed. The embedded vortex considerably disturbs the injectant when r/(Uc.d) is greater than 1.0, where r is the vortex circulation, Uc is the injectant mean velocity and d is the injection hole diameter.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/27010
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  • 1. Thesis and Dissertation Collection, all items

Related items

Showing items related by title, author, creator and subject.

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    Effect of vortex circulation on injectant from a single film-cooling hole and a row of film-cooling holes in a turbulent boundary layer, Part 2: injection beneath the vortex upwash 

    Kaisuwan, Pisut (Monterey, California. Naval Postgraduate School, 1989-12);
    Results are presented which illustrated the effects of single embedded longitudinal vortices on heat transfer and injectant downstream of a row of film-cooling holes and downstream of a single hole in a turbulent boundary ...
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    Effects of an embedded vortex on a single film-cooling jet in a turbulent boundary layer 

    Williams, Warren W. (Monterey, California : Naval Postgraduate School, 1988-06);
    Effects of embedded longitudinal vortices on heat transfer in a turbulent boundary layer film cooled from a single injection hole are discussed. Film coolant was injected at blowing ratios 0.50 to 1.50 at a freestream velocity ...
  • Thumbnail

    Turbulence structure resulting from interaction between an embedded vortex and wall jet. 

    Green, James G. (Monterey, California. Naval Postgraduate School, 1989);
    Interactions of wall jets and vortices embedded in turbulent boundary layers commonly occur near gas turbine blades and endwalls where film cooling is employed. These interactions frequently result in undesirable heat ...
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