A NOTE ON CONVERGENT ZONES

Abstract

An exact solution for ray paths near a sound channel with parabolic velocity profile is given for rays crossing the sound channel axis at small angles. The convergent zone for such rays for a source on axis is compared with the numerically computed results of M. A. Pederson, J. Acoust. Soc. Am., 33, 465, (1961). Two simple straight line velocity gradient approximations are compared with the parabolic case for the purpose of observing their accuracy. Both cases show surprisingly good agreement over a range of choices for the gradients. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 02, 1962
Accession Number
AD0808753

Entities

People

  • L. R. B. Duykers
  • R. R. Goodman

Organizations

  • SACLANT ASW Research Centre

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Acoustic Properties
  • Agreements
  • Antisubmarine Warfare
  • Differential Equations
  • Electronics Laboratories
  • Equations
  • Military Organizations
  • Military Research
  • Naval Operations
  • Navy
  • New York
  • Ordnance Laboratories
  • Ray Tracing
  • Submarine Warfare
  • Test And Evaluation
  • Undersea Warfare

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Wave Propagation and Nonlinear Chaotic Dynamics.