A proper orthogonal decomposition analysis to identify the dominant modes of the steady state acoustic pressure field in a cavity

Georgiou, IT; Papadopoulos, CI

dc.contributor.author	Georgiou, IT	en
dc.contributor.author	Papadopoulos, CI	en
dc.date.accessioned	2014-03-01T02:49:22Z
dc.date.available	2014-03-01T02:49:22Z
dc.date.issued	2003	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34555
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-1842731891&partnerID=40&md5=f339d0e19e2d652c085a7d5512b0da6b	en
dc.subject.other	Acoustics	en
dc.subject.other	Approximation theory	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Database systems	en
dc.subject.other	Finite element method	en
dc.subject.other	Fourier transforms	en
dc.subject.other	Frequencies	en
dc.subject.other	Navier Stokes equations	en
dc.subject.other	Problem solving	en
dc.subject.other	Proper orthogonal decomposition (POD)	en
dc.subject.other	Steady state dynamics	en
dc.subject.other	Identification (control systems)	en
dc.title	A proper orthogonal decomposition analysis to identify the dominant modes of the steady state acoustic pressure field in a cavity	en
heal.type	conferenceItem	en
heal.publicationDate	2003	en
heal.abstract	The technique of Proper Orthogonal Decomposition (POD) has been used to develop an identification tool to analyze steady state dynamics in acoustics. The information on the dynamics needed for the POD technique is obtained by solving numerically with the method of finite elements the wave equation inside a cavity. The POD technique identifies optimum spatial patterns it terms of Proper Orthogonal Modes. The steady state sound pressure field in a cavity excited by a single harmonic source responds with a very small number of POD modes. Under certain forcing conditions, the POD modes are identical to the Fourier acoustic modes. The POD technique of Proper Orthogonal Decomposition (POD) proves to be a very effective identification tool.	en
heal.journalName	Proceedings of the ASME Design Engineering Technical Conference	en
dc.identifier.volume	5 B	en
dc.identifier.spage	1601	en
dc.identifier.epage	1610	en