### Skapa referens, olika format (klipp och klistra)

**Harvard**

Lundquist, L. och Boström, A. (1987) *Acoustic waves in a cylindrical duct with infinite, half-infinite, or finite wall corrugations*.

** BibTeX **

@article{

Lundquist1987,

author={Lundquist, Lennart and Boström, Anders},

title={Acoustic waves in a cylindrical duct with infinite, half-infinite, or finite wall corrugations},

journal={Journal of Sound and Vibration},

issn={0022-460X},

volume={112},

pages={111-124},

abstract={Time-harmonic acoustic waves in a cylindrical hard-walled duct with infinite, half-infinite, or finite wall corrugations are considered. The modes in the infinite corrugated duct are determined with the null field approach. The sinusoidally corrugated duct is studied numerically and the behaviour of the longitudinal wavenumber is closely investigated in both passbands and stopbands. The transmission and reflection soefficients for a junction between a straight and a corrugated duct are calculated by mode-matching and more complicated cases, such as a straight duct with a finite number of corrugations, can then be treated by a building-block method. Numerical examples are given which show reflection coefficients for a junction between a straight and a corrugated duct and also for a straight duct with a finite number of corrugations.},

year={1987},

keywords={acoustics, duct, corrugated walls},

}

** RefWorks **

RT Journal Article

SR Print

ID 190597

A1 Lundquist, Lennart

A1 Boström, Anders

T1 Acoustic waves in a cylindrical duct with infinite, half-infinite, or finite wall corrugations

YR 1987

JF Journal of Sound and Vibration

SN 0022-460X

VO 112

SP 111

OP 124

AB Time-harmonic acoustic waves in a cylindrical hard-walled duct with infinite, half-infinite, or finite wall corrugations are considered. The modes in the infinite corrugated duct are determined with the null field approach. The sinusoidally corrugated duct is studied numerically and the behaviour of the longitudinal wavenumber is closely investigated in both passbands and stopbands. The transmission and reflection soefficients for a junction between a straight and a corrugated duct are calculated by mode-matching and more complicated cases, such as a straight duct with a finite number of corrugations, can then be treated by a building-block method. Numerical examples are given which show reflection coefficients for a junction between a straight and a corrugated duct and also for a straight duct with a finite number of corrugations.

LA eng

OL 30