Underwater Acoustic Scattering from Spherical Particulates and Bubbles

Abstract

High frequency underwater acoustic scattering from spherical particulates is examined theoretically for purposes of comparison with available data to develop conclusions on the types and magnitudes of scattering in various geographical regions. The simplifying assumptions of an ideal fluid sphere and isotropic medium conditions are employed in the derivation of the theoretical particulate scattering model. This theory is detailed here and also presented in the form of scattering plots generated by a computer model developed in this study to facilitate accurate analysis of individual scatterers. Special theoretical cases are presented and examined, including those of a large sphere, a small sphere, a rigid sphere (highly incompressible), and a gas bubble (highly compressible), for which additional consideration of damping effects is provided. Keywords: Underwater acoustics; Acoustic scattering. (JHD)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1989
Accession Number
ADA214827

Entities

People

  • K. B. Sullivan-silva

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Scattering
  • Acoustic Waves
  • Acoustics
  • Bessel Functions
  • Computer Programs
  • Computers
  • Equations
  • Frequency
  • Particles
  • Particulates
  • Radial Velocity
  • Resonant Frequency
  • Scattering
  • Standing Waves
  • Thermal Conductivity
  • Wave Equations

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Plasma Physics / Magnetohydrodynamics