Research Program in Hydroacoustics.

Abstract

This porgram is concerned with the nature of the low wavenumber characteristics of turbulent boundary layer pressure fluctuations including their relationship with structural vibration, and cavitation noise from tip vortices. There are four major tasks: a) Development of signal analysis techniques that permit accurate estimates of the low wavenumber portion of the wavenumber frequency pressure spectrum. b) Measurements of the pressure spectrum and comparison of experiment with a theoretical wave guide model. c) Determination of the structural response to wall layer pressure fluctuations and the influence of plate vibration on the structure of turbulence within the boundary layer. d) Measurement of the spectral characteristics and source distribution of cavitation noise in tip vortices in steady and nonsteady flow.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1987
Accession Number
ADA180312

Entities

People

  • Hiroshi Higuchi
  • Mostafa Kaveh
  • Robert Lambert
  • Robert Plunkett
  • Roger E. Arndt

Organizations

  • University of Minnesota

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Acoustics
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Convection
  • Electrical Engineering
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Geometry
  • Hydrodynamics
  • Information Science
  • Measurement
  • Mechanics
  • Physics Laboratories

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Computer Science.
  • Fluid Mechanics and Fluid Dynamics.