A Data Reduction Procedure for Cavitation Noise from an Oscillating Hydrofoil.

Abstract

An improved computerized technique has been used to analyze nonstationary cavitation noise from an oscillating hydrofoil. Combined analog and digital signal processing procedures were developed that use ensemble averaging techniques to quantify the average sound pressure variance as a function of the foil's angle of attack. The averages provide a quantitative basis for comparing cavitation noise produced by this hydrofoil under a finite spectrum of specific test conditions. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1981
Accession Number
ADA105719

Entities

People

  • David W Taylor
  • Robert D. Pierce

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Computer Programs
  • Computers
  • Data Acquisition
  • Detectors
  • Digital Signal Processing
  • Fluid Flow
  • Hydrofoils
  • Measurement
  • Numbers
  • Power Spectra
  • Pressure Measurement
  • Random Variables
  • Signal Processing
  • Sound Pressure
  • Spectra
  • Square Roots
  • Tape Recorders

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Electronics Engineering
  • Marine Propulsion Engineering and Naval Architecture