Scaling of Noise Generation Due to a Single Bubble in a Cavitating Trailing Vortex

Abstract

Scaling of noise generation due to a single bubble in a cavitating trailing vortex is studied. Vortex core dynamics between full-scale and model is mathematically formulated based on a similarity flow approach and McCormick's hypothesis. Acoustic frequency and amplitude scaling formulas to obtain full scale acoustic spectrum from model data are derived. The acoustic scaling formulas are also compared with bubble dynamic calculations with encouraging results. The numerical calculations are obtained from a Dynaflow Inc. computer code. The acoustic scaling formulas are compared with Strasberg's classic lambda scaling and noise level scaling.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2002
Accession Number
ADA410257

Entities

People

  • C-t. Hsiao
  • G. L. Chahine
  • S. D. Jessup
  • Y. T. Shen

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Frequencies
  • Amplitude
  • Barometric Pressure
  • Cavitation Noise
  • Demographic Cohorts
  • Dynamics
  • Equations
  • Flow
  • Free Stream
  • Frequency
  • Mechanics
  • Pressure Distribution
  • Reynolds Number
  • Spectra
  • Trailing Vortices
  • Vapor Pressure
  • Vortices

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.
  • Underwater engineering and Marine Technology.