An Experimental Investigation of the Acoustic and Fluid Dynamic Characteristics of a Circulation-Controlled Airfoil

Abstract

The purpose of this investigation is to experimentally identify and characterize the flow field and corresponding noise sources of a circulation control airfoil. Flow and acoustic data are obtained for a dual-slotted, elliptic circulation control airfoil in an anechoic wind tunnel. The effect of single-slot blowing on the aerodynamic characteristics of the airfoil and the flow field is evaluated. Noise sources are identified for a variety of test conditions, and the acoustic data are compared with an existing analytical model of circulation control acoustics. An accurate acoustic model combined with specific information about each noise source mechanism will provide future researchers with the tools necessary to intuitively design and test quiet circulation control appendages for use on underwater vehicles.

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Document Details

Document Type
Technical Report
Publication Date
May 13, 2011
Accession Number
ADA550391

Entities

People

  • Drew Wetzel
  • Louis N Cattafesta

Organizations

  • University of Florida

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Acoustic Measurement
  • Acoustics
  • Aerodynamic Characteristics
  • Boundary Layer
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Hydrodynamics
  • Hypervelocity Flow
  • Pressure Distribution
  • Pressure Measurement
  • Test Facilities
  • Three Dimensional
  • Turbulent Mixing
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Aerodynamics/Aeronautics.
  • Systems Analysis and Design