Eigenfrequencies of an acoustic rectangular cavity containing a rigid small sphere

Roumeliotis, JA

dc.contributor.author	Roumeliotis, JA	en
dc.date.accessioned	2014-03-01T01:09:23Z
dc.date.available	2014-03-01T01:09:23Z
dc.date.issued	1993	en
dc.identifier.issn	0001-4966	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10943
dc.subject.classification	Acoustics	en
dc.subject.other	acoustics	en
dc.subject.other	article	en
dc.subject.other	calculation	en
dc.subject.other	geometry	en
dc.subject.other	mathematical analysis	en
dc.subject.other	measurement	en
dc.title	Eigenfrequencies of an acoustic rectangular cavity containing a rigid small sphere	en
heal.type	journalArticle	en
heal.identifier.primary	10.1121/1.406736	en
heal.identifier.secondary	http://dx.doi.org/10.1121/1.406736	en
heal.language	English	en
heal.publicationDate	1993	en
heal.abstract	Analytical expressions are derived for the eigenfrequencies of any mode in a hard-walled acoustic rectangular cavity, containing an acoustically small rigid sphere. A straightforward and simple approach is employed to obtain a first-order perturbation of the cavity eigenfunctions and the corresponding eigenfrequency shifts. Rectangular wave functions, as well as their expansion in terms of cylindrical wave functions and finally in terms of spherical ones, are used. The results are useful in problems connected with acoustic levitation and with excitation or probing of resonant cavities. Some suggestions are made about the best positioning of the probe, for more exact measurement of the eigenfrequency of any mode in the unperturbed cavity. Graphical results for some of the lower-order modes are given, for various values of the parameters.	en
heal.publisher	AMER INST PHYSICS	en
heal.journalName	Journal of the Acoustical Society of America	en
dc.identifier.doi	10.1121/1.406736	en
dc.identifier.isi	ISI:A1993KX49500003	en
dc.identifier.volume	93	en
dc.identifier.issue	4 I	en
dc.identifier.spage	1710	en
dc.identifier.epage	1715	en