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**Harvard**

Boström, A. (1980) *Transmission and reflection of acoustic waves by an obstacle in a waveguide*.

** BibTeX **

@article{

Boström1980,

author={Boström, Anders},

title={Transmission and reflection of acoustic waves by an obstacle in a waveguide},

journal={Wave motion},

issn={0165-2125},

volume={2},

pages={167-184},

abstract={By an extension of the null field approach introduced by Waterman the transmission and reflection of acoustic waves by an obstacle in a waveguide are considered. The waveguide is assumed to have a constant cross section but otherwise the geometry is left arbitrary. The scattered field is obtained as a complicated mode sum containing the transition matrix of the obstacle, the reflection matrix of the waveguide wall, and the transformation relations between the cylindrical and spherical basis functions. For a circular cross section of the waveguide relatively explicit expressions are given for the transmission and reflection coefficients, and numerical results are shown for spherical and spheroidal obstacles in rotaionally symmetric configurations. Several natural extensions of the present results are finally recognized.},

year={1980},

keywords={acoustics, waveguide, obstacle},

}

** RefWorks **

RT Journal Article

SR Print

ID 189908

A1 Boström, Anders

T1 Transmission and reflection of acoustic waves by an obstacle in a waveguide

YR 1980

JF Wave motion

SN 0165-2125

VO 2

SP 167

OP 184

AB By an extension of the null field approach introduced by Waterman the transmission and reflection of acoustic waves by an obstacle in a waveguide are considered. The waveguide is assumed to have a constant cross section but otherwise the geometry is left arbitrary. The scattered field is obtained as a complicated mode sum containing the transition matrix of the obstacle, the reflection matrix of the waveguide wall, and the transformation relations between the cylindrical and spherical basis functions. For a circular cross section of the waveguide relatively explicit expressions are given for the transmission and reflection coefficients, and numerical results are shown for spherical and spheroidal obstacles in rotaionally symmetric configurations. Several natural extensions of the present results are finally recognized.

LA eng

OL 30