Diffracted acoustic fields about circular apertures in soft and hard baffles

Citation
Cj. Huang et Cy. Chen, Diffracted acoustic fields about circular apertures in soft and hard baffles, ACUSTICA, 85(3), 1999, pp. 301-311
Citations number
12
Categorie Soggetti
Optics & Acoustics
Journal title
ACUSTICA
ISSN journal
14367947 → ACNP
Volume
85
Issue
3
Year of publication
1999
Pages
301 - 311
Database
ISI
SICI code
1436-7947(199905/06)85:3<301:DAFACA>2.0.ZU;2-1
Abstract
The integral equation method is applied to determine the diffracted acousti c field about circular apertures in soft and hard baffles. To verify the ac curacy of the numerical algorithm, the diffracted acoustic fields about sof t and hard circular disks have been computed and compared with analytical r esults. The same numerical method is then applied to compute the diffracted acoustic waves about circular apertures in soft and hard baffles. The Babi net principle has also been used to check whether the computed diffracted a coustic wave about a soft (hard) disk is identical to that about the circul ar aperture in a hard (soft) baffle. Finally, the effect of the wavenumber and the location of the acoustic source on the diffraction is systematicall y studied and analyzed. A general discussion based on a comparison of the d iffracted acoustic fields about hard and soft baffles is given.