Accession Number:

ADA214827

Title:

Underwater Acoustic Scattering from Spherical Particulates and Bubbles

Descriptive Note:

Final rept.

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT RI

Personal Author(s):

Report Date:

1989-11-01

Pagination or Media Count:

56.0

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

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE