Flow Visualization and Velocity Measurements in the Separated Region of an Appendage-Flat Plate Junction,

Abstract

A 'root' vortex forms at the junction of a flat plate and an appendage, creating a three-dimensional separated flow. Time dependent oil film and oil dot visualizations of this turbulent flow have revealed the vortex system and have provided quantitative information on the direction and the magnitude of the shear stress. Two-dimensional LDV (Laser Doppler Velocimetry) mean velocity measurements were made in the separated flow region around the leading edge of the appendage, and these measurements are compared here with the flow visualization results.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1986
Accession Number
ADA167611

Entities

People

  • Stuart C. Dickinson

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Coordinate Systems
  • Films
  • Flow
  • Flow Visualization
  • Frequency
  • Layers
  • Leading Edges
  • Measurement
  • Potential Flow
  • Pressure Measurement
  • Secondary Flow
  • Shear Stresses
  • Static Pressure
  • Turbulent Flow
  • Visualizations
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.

Technology Areas

  • Directed Energy