The Response of a Laminar Boundary Layer to Sound and Wall Vibration,

Abstract

An experimental analysis of the interaction of sound and plate vibration with a laminar boundary layer is presented. The two excitations generate disturbances at the leading edge of the plate which develop into Tollmien-Schlichting (TS) waves in the quasi-parallel region of the boundary layer. It is demonstrated that the TS wave and the sound wave coexist independently in this region, as predicted by the linear theory. A TS wave generated by a vibrating ribbon is shown to superimpose linearly with the sound-generated TS wave. Plate vibration is used to successfully cancel a sound-excited TS wave.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1983
Accession Number
ADA132843

Entities

People

  • Charles J. Gedney

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustics
  • Boundary Layer
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Materials Science
  • Measurement
  • Mechanical Engineering
  • Military Research
  • Naval Architecture
  • Physics Laboratories
  • Resonant Frequency
  • Standing Waves
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aquatic Ecology
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Fluid Mechanics and Fluid Dynamics.