Propagation of Sound in a Fast Bottom Underlying a Wedge-Shaped Medium.

Abstract

The pressure and phase distribution of sound in a fast fluid medium underlying a tapered fluid medium was modeled using a Green's function approach. The model predicted well-defined beams in the bottom, with apparent interference effects strongly evident for cases at a distance from the wedge interface. The effects of attenuation on the patterns were studied. A simple expression for determining the beam depression angle as a function of the wedge angle, the sound speed ratio, and the density ratio was derived. Comparisons with laboratory measurements were made.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1980
Accession Number
ADA094984

Entities

People

  • Norine A. Bradshaw

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Waves
  • Acoustics
  • Attenuation
  • Chemistry
  • Crystal Structure
  • Depression
  • Depression Angles
  • Equations
  • Experimental Data
  • Insensitive Explosives
  • Measurement
  • Physical Properties
  • Physics
  • Plastic Explosives
  • Pressure Distribution
  • United States

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Approximation Theory.
  • Structural Dynamics.