A Theoretical Study of Leading Edge Noise

Abstract

The report describes a theoretical procedure for calculating leading edge noise which addresses the differences found between current theoretical calculations and wind tunnel measurements of unsteady lift on airfoils in turbulent flow. The results have been compared with experiments carried at in a companion study at Virginia Tech by Dr. William Devenport. It was concluded that the effect of angle of attack on the radiated noise is relatively weak but the effect of thickness is to reduce the radiated sound levels at high frequencies.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2008
Accession Number
ADA491573

Entities

People

  • Stewart Glegg

Organizations

  • Florida Atlantic University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Acoustic Measurement
  • Complex Variables
  • Computational Fluid Dynamics
  • Computational Science
  • Convolution Integrals
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Frequency
  • Leading Edges
  • Measurement
  • Noise
  • Radiated Noise
  • Stagnation Point
  • Step Functions
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Fluid Mechanics and Fluid Dynamics.
  • Research Science/Academic Research