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Title: Diffraction of Sound by Objects in the One-Wavelength Size Range
Authors: Lee, Soon Young
Keywords: Sound--Measurement
Diffractive scattering
Moments method (Statistics)
Publisher: Construction Engineering Research Laboratories (U.S.)
Series/Report no.: Technical Manuscript (Construction Engineering Research Laboratories (U.S.));97/73
Abstract: The diffraction of sound by hard geometrical shapes has been studied by the Method of Moments (MOM), a boundary element technique for solving the scalar Helmholtz integral equation. The scattered fields of several rectilinear-shaped objects are analyzed. The problem of scattering by an axially-symmetric obstacle has been simplified by using the symmetry to reduce the computational load. The validity of the resulting procedure has been verified by comparing the MoM results for a flat circular disk illuminated by either a plane or spherical wave with the results obtained by the classical method of separation of variables and expansion in oblate spheroidal wave functions.
Description: Technical Manuscript
Gov't Doc #: USACERL Technical Manuscript 97/73
Rights: Approved for public release; distribution is unlimited
Appears in Collections:Technical Manuscript

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