Accession Number : AD0758395

Title :   Domains of Validity of High Frequency Methods Used in Wave Propagation Problems.

Descriptive Note : Final rept.,

Corporate Author : CAMBRIDGE ACOUSTICAL ASSOCIATES INC MASS

Personal Author(s) : Sachs,David A.

Report Date : JAN 1973

Pagination or Media Count : 129

Abstract : Four high frequency approximations appropriate to problems concerned with wave propagation in stratified media are studied to gain some insight into their domains of validity. The four schemes - ray theory, complex ray theory, diffracted ray theory, and the Caustic Boundary Layer approximation (sometimes referred to as modified ray theory) - are investigated through comparisons with exactly known results and experimental data. (Author)

Descriptors :   (*UNDERWATER SOUND, HIGH FREQUENCY), DIFFERENTIAL EQUATIONS, COMPLEX VARIABLES, INTEGRAL TRANSFORMS, APPROXIMATION(MATHEMATICS), NUMERICAL INTEGRATION, NUMERICAL ANALYSIS

Subject Categories : Air Breathing Engines(unconventional)

Distribution Statement : APPROVED FOR PUBLIC RELEASE