Accession Number : AD0417626

Title :   FUNDAMENTALS OF NONLINEAR ACOUSTICS.

Descriptive Note : Rept. for Dec 60-Mar 63,

Corporate Author : IIT RESEARCH INST CHICAGO ILL

Personal Author(s) : Sperry,William C.

Report Date : JUN 1963

Pagination or Media Count : 24

Abstract : Background, philosophy, and problem areas for the special field of nonlinear acoustics are dis cussed. Basic equations for the propagation of sound in homogeneous continuous fluid media are presented in an ordered form where inherent limitations are noted. Without an ordered ar rangement of the fundamental equations for which the limitations are clearly delineated, two pit falls are apt to be encountered. First, an erroneous assumption may be made that any partic ular set of equations is exact. There are no available exact equations, only equations that may be sufficiently accurate for the particular problem of interest. The second pitfall is that a more complicated set of equations may be chosen than is merited for the problem under consideration. (Author)

Descriptors :   (*ACOUSTICS, NONLINEAR SYSTEMS), PROPAGATION, SOUND, EQUATIONS, FLUIDS, SOUND, TENSOR ANALYSIS, MOMENTUM, STRESSES, MOTION, ENERGY, EQUATIONS OF STATE, DIFFERENTIAL EQUATIONS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE