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

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 focussed 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 Gamma/(U sub c)(d) is greater than 1.0 where Gamma is the vortex circulation, U sub c is the injectant mean velocity and d is the injection hole diameter. Keywords: Embedded vortices; Film cooling. Theses.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1989
Accession Number
ADA215288

Entities

People

  • Douglas W. Craig

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Coordinate Systems
  • Engineering
  • Flow Visualization
  • Fluid Mechanics
  • Gas Turbines
  • Generators
  • Heat Transfer
  • Layers
  • Measurement
  • Mechanical Engineering
  • Pressure Distribution
  • Stratified Fluids
  • Turbines
  • Turbulent Boundary Layer
  • Vortex Generators
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Fluid Dynamics.
  • Geotechnical Engineering.