NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.

Detalhes bibliográficos
Autor(a) principal: Bistafa, S. R. [UNESP]
Data de Publicação: 1986
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/63794
Resumo: An experimental investigation of the noise generated by cavitation in turbulent shear flows produced by confined sharp-edge orifice-plates is reported. The acoustic source strength of cavitation was determined by means of reciprocity type measurements. Experimentally determined scaling parameters are applied to a model to prototype scaling formula derived from dimensional analysis. The proposed formula is checked experimentally. Comparative photographic observations of the cavitation patterns for two different values of gas content are presented. The observed sound reduction, that occurs when supersaturated conditions exist downstream the orifice-plates, is explained by the effects of gas diffusion into the cavitation bubbles, and by simple acoustic attenuation.
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spelling NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.ACOUSTIC WAVES - AttenuationFLOW OF FLUIDS - OrificesGASES - DiffusionGASEOUS EFFECTSORIFICE-PLATESPROTOTYPE SCALING FORMULARECIPROCITY PRINCIPLECAVITATIONAn experimental investigation of the noise generated by cavitation in turbulent shear flows produced by confined sharp-edge orifice-plates is reported. The acoustic source strength of cavitation was determined by means of reciprocity type measurements. Experimentally determined scaling parameters are applied to a model to prototype scaling formula derived from dimensional analysis. The proposed formula is checked experimentally. Comparative photographic observations of the cavitation patterns for two different values of gas content are presented. The observed sound reduction, that occurs when supersaturated conditions exist downstream the orifice-plates, is explained by the effects of gas diffusion into the cavitation bubbles, and by simple acoustic attenuation.Univ Estadual Paulista 'Julio de Mesquita Filho', Sao Paulo, Braz, Univ Estadual Paulista 'Julio de Mesquita Filho', Sao Paulo, BrazUniv Estadual Paulista 'Julio de Mesquita Filho', Sao Paulo, Braz, Univ Estadual Paulista 'Julio de Mesquita Filho', Sao Paulo, BrazUniversidade Estadual Paulista (Unesp)Bistafa, S. R. [UNESP]2014-05-27T02:35:18Z2014-05-27T02:35:18Z1986-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject41-52American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, v. 45, p. 41-52.http://hdl.handle.net/11449/637942-s2.0-0022907269Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDinfo:eu-repo/semantics/openAccess2021-10-23T21:37:55Zoai:repositorio.unesp.br:11449/63794Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:24:58.884638Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
title NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
spellingShingle NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
Bistafa, S. R. [UNESP]
ACOUSTIC WAVES - Attenuation
FLOW OF FLUIDS - Orifices
GASES - Diffusion
GASEOUS EFFECTS
ORIFICE-PLATES
PROTOTYPE SCALING FORMULA
RECIPROCITY PRINCIPLE
CAVITATION
title_short NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
title_full NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
title_fullStr NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
title_full_unstemmed NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
title_sort NOISE GENERATED BY CAVITATION IN ORIFICE-PLATES WITH SOME GASEOUS EFFECTS.
author Bistafa, S. R. [UNESP]
author_facet Bistafa, S. R. [UNESP]
author_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Bistafa, S. R. [UNESP]
dc.subject.por.fl_str_mv ACOUSTIC WAVES - Attenuation
FLOW OF FLUIDS - Orifices
GASES - Diffusion
GASEOUS EFFECTS
ORIFICE-PLATES
PROTOTYPE SCALING FORMULA
RECIPROCITY PRINCIPLE
CAVITATION
topic ACOUSTIC WAVES - Attenuation
FLOW OF FLUIDS - Orifices
GASES - Diffusion
GASEOUS EFFECTS
ORIFICE-PLATES
PROTOTYPE SCALING FORMULA
RECIPROCITY PRINCIPLE
CAVITATION
description An experimental investigation of the noise generated by cavitation in turbulent shear flows produced by confined sharp-edge orifice-plates is reported. The acoustic source strength of cavitation was determined by means of reciprocity type measurements. Experimentally determined scaling parameters are applied to a model to prototype scaling formula derived from dimensional analysis. The proposed formula is checked experimentally. Comparative photographic observations of the cavitation patterns for two different values of gas content are presented. The observed sound reduction, that occurs when supersaturated conditions exist downstream the orifice-plates, is explained by the effects of gas diffusion into the cavitation bubbles, and by simple acoustic attenuation.
publishDate 1986
dc.date.none.fl_str_mv 1986-12-01
2014-05-27T02:35:18Z
2014-05-27T02:35:18Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, v. 45, p. 41-52.
http://hdl.handle.net/11449/63794
2-s2.0-0022907269
identifier_str_mv American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, v. 45, p. 41-52.
2-s2.0-0022907269
url http://hdl.handle.net/11449/63794
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 41-52
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129064973631488

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