Title :
Acoustic scattering from two parallel soft cylinders
Author :
Scharstein, Robert W.
Author_Institution :
Dept. of Electr. Eng., Alabama Univ., Tuscaloosa, AL, USA
Abstract :
The scattered field due to two parallel circular cylinders illuminated by a plane wave is formulated in terms of outgoing cylindrical waves emanating from each cylinder. Dirichlet boundary conditions are enforced on each cylindrical surface. Graf´s addition theorem for cylindrical harmonics makes possible the closed-form evaluation of the coefficients in two infinite, coupled sets of linear equations for the unknown modal coefficients. Resultant far scattered fields in the frequency domain are graphed for several geometries and plane wave incidence angles. The effects of coupling between cylinders are studied via a comparison between far-field scatter computed by this accurate method and a noninteracting sum of the isolated cylinder responses
Keywords :
acoustic wave scattering; electromagnetic wave scattering; Dirichlet boundary conditions; Graf´s addition theorem; acoustic scattering; closed-form evaluation; coupling effects; cylindrical harmonics; electromagnetic scattering; far scattered fields; frequency domain; isolated cylinder responses; linear equations; outgoing cylindrical waves; parallel soft cylinders; plane wave incidence angles; unknown modal coefficients; Acoustic scattering; Acoustic waves; Boundary conditions; Boundary value problems; Contracts; Electromagnetic scattering; Engine cylinders; Equations; Geometry; Wave functions;
Conference_Titel :
Southeastcon '92, Proceedings., IEEE
Conference_Location :
Birmingham, AL
Print_ISBN :
0-7803-0494-2
DOI :
10.1109/SECON.1992.202409
