Investigation of Blunt Fin-Induced Flow Separation Region on a Flat Plate at Mach Numbers 2.5 to 4.0

Abstract

Tests were conducted at Mach numbers 2.5 to 4.0 to investigate the effects of cylindrically blunted fins on the flow over a flat plate at zero angle of attack. The free-stream Reynolds number, based on the distance from the blunt fin to the flat plate leading edge, ranged from 2,800,000 to 4,700,000. Pitot pressure profiles were obtained in the fin-induced flow separation region. Increasing the thickness of the fin was found to increase the size of the three dimensional separation area. Pressure distributions as well as examples of the oil flow and schlieren photographic coverage are presented.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1971
Accession Number
AD0717717

Entities

People

  • Ernest J. Lucas

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Acquisition
  • Air Force
  • Boundary Layer
  • Boundary Layer Trips
  • Data Acquisition
  • Flow
  • Flow Fields
  • Flow Separation
  • Fluid Dynamics
  • Free Stream
  • Instrumentation
  • Mach Number
  • Pressure Distribution
  • Pressure Measurement
  • Reynolds Number
  • Three Dimensional
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Dynamics.
  • Structural Dynamics.