Vortex particle methods in aeroacoustic calculations

Huberson, S; Rivoalen, E; Voutsinas, S

dc.contributor.author	Huberson, S	en
dc.contributor.author	Rivoalen, E	en
dc.contributor.author	Voutsinas, S	en
dc.date.accessioned	2014-03-01T01:29:28Z
dc.date.available	2014-03-01T01:29:28Z
dc.date.issued	2008	en
dc.identifier.issn	0021-9991	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19275
dc.subject	Vortex sound	en
dc.subject	Vortex flows	en
dc.subject	CFD	en
dc.subject	Acoustic analogy	en
dc.subject	Helicopter noise	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	NUMERICAL-SIMULATION	en
dc.subject.other	SOUND RADIATION	en
dc.subject.other	SLENDER VORTEX	en
dc.subject.other	DYNAMICS	en
dc.subject.other	FORMULATION	en
dc.subject.other	VORTICES	en
dc.subject.other	FLOWS	en
dc.subject.other	RINGS	en
dc.title	Vortex particle methods in aeroacoustic calculations	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jcp.2008.06.011	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jcp.2008.06.011	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The connection between vortex particle methods and aeroacoustics is considered within the framework of Lighthill's acoustic analogy which allows to decouple the flow from noise propagation. For the flow. techniques such as tree-algorithms and the particle-mesh method are brought together with the aim to achieve the best possible performance in view of analyzing complex problems. The now results are then input to the acoustic wave equation which is solved in integral form. It will involve monopole, dipole and quadrupole terms which can be Successively integrated. The significance of such an approach is first demonstrated in two problems, both related to vortex-solid interactions. The first is a generic one and considers the interaction of a vortex filament interacting with a sphere while the second considers helicopter noise as ail example of a complex engineering set-tip. (C) 2008 Elsevier Inc. All rights reserved.	en
heal.publisher	ACADEMIC PRESS INC ELSEVIER SCIENCE	en
heal.journalName	JOURNAL OF COMPUTATIONAL PHYSICS	en
dc.identifier.doi	10.1016/j.jcp.2008.06.011	en
dc.identifier.isi	ISI:000260353900012	en
dc.identifier.volume	227	en
dc.identifier.issue	21	en
dc.identifier.spage	9216	en
dc.identifier.epage	9240	en