Accession Number:

AD0711319

Title:

ACOUSTIC RAYS IN AN ARBITRARY MOVING INHOMOGENEOUS MEDIUM

Descriptive Note:

Technical rept.

Corporate Author:

NAVAL WEAPONS LAB DAHLGREN VA

Personal Author(s):

• Ugincius, Peter
• Zondek, Bernd

Report Date:

1970-08-01

Pagination or Media Count:

36.0

Abstract:

Two different formulations are presented in terms of ordinary second- order vector differential equations for acoustic rays in a three-dimensional medium moving with an arbitrary velocity either subsonic or supersonic, and having an arbitrary index of refraction. The first formulation has the arc length of the ray as independent variable, while the second one is given in terms of a canonical variable and is equivalent to Kellers Hamiltonian formulation.

Descriptors:

• *SOUND TRANSMISSION
• NUMERICAL ANALYSIS
• PARTIAL DIFFERENTIAL EQUATIONS
• VECTOR ANALYSIS
• SUBSONIC FLOW
• SUPERSONIC FLOW

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE