Acoustic Scattering by a Vortex Model of Turbulence

Abstract

This report summarizes the work performed under DOD SBIR contract DAAL06-92-C-0006, to develop a computational algorithm for modeling the acoustic scattering from a turbulence distribution, which is modeled as a collection of discrete turbules with a discrete turbule size spectrum. The methods adopted here build on the structure function analysis, and incorporate this approach into a mean field method for characterizing coherent and incoherent multiple scattering from a turbulence volume. The mean field treatment is an extension to the acoustic case of prior work in electromagnetic scattering from turbulence. The object of the current effort is to produce a phase I code module that is very general, and that can, under phase II and beyond, be adapted to and incorporated in the Army's broader acoustic modeling program, with particular application to the issue of scattering into shadow zones.

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Document Details

Document Type
Technical Report
Publication Date
Nov 19, 1992
Accession Number
ADA382467

Entities

People

  • Chris Rollins
  • David Resendes
  • Michael Squillante

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Properties
  • Acoustic Scattering
  • Acoustic Waves
  • Acoustics
  • Bessel Functions
  • Computational Fluid Dynamics
  • Computational Science
  • Coordinate Systems
  • Differential Equations
  • Electromagnetic Scattering
  • Far Field
  • Fluid Dynamics
  • Incoherent Scattering
  • Integral Equations
  • Refractive Index
  • Scattering

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Mechanics and Fluid Dynamics.
  • Software Engineering.