Accession Number:

ADA247688

Title:

Computational Acoustics

Descriptive Note:

Final technical rept. 1 Feb 1988-31 Jan 1990

Corporate Author:

MASSACHUSETTS UNIV AMHERST DEPT OF MATHEMATICS AND STATISTICS

Personal Author(s):

• St Mary, Donald F.

Report Date:

1992-02-08

Pagination or Media Count:

3.0

Abstract:

General Goal To develop accurate and efficient numerical models of the acoustic propagation problem. The main considerations were long range propagation, short range propagation, one-way outgoing or incoming no backscatter -PEs, two-way backscatter - Elliptics, and liquidsolid interface. General Approach To model physical phenomena using partial differential equations and to apply modern numerical methods of scientific computing to their solution. The main considerations were stability, convergence, accuracy, efficiency, error estimates, well-posedness, and applicability.

Descriptors:

• *MATHEMATICAL MODELS
• *ACOUSTICS
• PROPAGATION
• COMPUTATIONS
• INTERFACES
• LIQUIDS
• PHYSICAL PROPERTIES
• ACCURACY
• EFFICIENCY
• BACKSCATTERING
• NUMERICAL METHODS AND PROCEDURES
• SHORT RANGE(DISTANCE)
• SOLIDS
• LONG RANGE(TIME)
• ESTIMATES
• ERROR ANALYSIS
• LONG RANGE(DISTANCE)
• SOUND TRANSMISSION
• PARTIAL DIFFERENTIAL EQUATIONS

Subject Categories:

• Numerical Mathematics
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE