Turbulent Boundary Layer Separation Characteristics with Blowing in an Oscillating Flow

Abstract

An open circuit oscillating flow wind tunnel was used to study the blowing requirements to maintain an attached turbulent boundary layer in an oscillating freestream flow with an adverse pressure gradient. Boundary layer separation was visualized through the use of tufts. Freestream flow oscillation frequency was found to have an effect on the blowing required to maintain attached flow. This frequency dependence exhibits characteristics which suggest resonant behavior.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1974
Accession Number
ADA003792

Entities

People

  • James Luther Foresman

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Boundary Layer
  • Dynamic Pressure
  • Flow
  • Flow Visualization
  • Fluid Dynamics
  • Frequency
  • Hydrodynamics
  • Measurement
  • Pressure Distribution
  • Pressure Gradients
  • Resonant Frequency
  • Steady Flow
  • Steady State
  • Turbines
  • Turbulent Boundary Layer
  • United States
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.