Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1109/TCI.2017.2721744 http://hdl.handle.net/11449/159666 |
Resumo: | An in-duct rotating beamforming technique, using a wall-mounted array of microphones placed within a long duct, was developed for locating broadband noise sources from an aeroengine fan. The technique was experimentally implemented at the recently constructed long-duct low-speed fan rig test facility at the University of Sao Paulo in Brazil. The test rig has a 16-bladed fan rotor and 14-vaned stator, with speed up to 4250 r/min and a maximum 0.1 Mach number mean axial flow speed. Here, we describe the beamforming details with an emphasis on the mandatory coordinate change to a rotating reference frame for a frequency domain virtual rotating microphone technique. Example sound source maps are presented revealing clear noise blade signatures together with simulated point spread function maps using modal steering vectors at six different frequencies that characterize the beamformer. |
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Repositório Institucional da UNESP |
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2946 |
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Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased ArraysAeroacousticarray signal processingfan noisein-duct beamformingpower spectral densityrotating acoustic imagingAn in-duct rotating beamforming technique, using a wall-mounted array of microphones placed within a long duct, was developed for locating broadband noise sources from an aeroengine fan. The technique was experimentally implemented at the recently constructed long-duct low-speed fan rig test facility at the University of Sao Paulo in Brazil. The test rig has a 16-bladed fan rotor and 14-vaned stator, with speed up to 4250 r/min and a maximum 0.1 Mach number mean axial flow speed. Here, we describe the beamforming details with an emphasis on the mandatory coordinate change to a rotating reference frame for a frequency domain virtual rotating microphone technique. Example sound source maps are presented revealing clear noise blade signatures together with simulated point spread function maps using modal steering vectors at six different frequencies that characterize the beamformer.Univ Sao Paulo, Escola Politecn, Dept Elect Engn, BR-05508010 Sao Paulo, BrazilUniv Sao Paulo, Dept Aeronaut Engn, BR-13566590 Sao Carlos, SP, BrazilSao Paulo State Univ, BR-13876750 Sao Paulo, BrazilUniv Sao Paulo, Escola Politecn, Dept Telecommun & Control Engn, BR-05508010 Sao Paulo, BrazilSao Paulo State Univ, BR-13876750 Sao Paulo, BrazilIeee-inst Electrical Electronics Engineers IncUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Caldas, Luciano C.Greco, Paulo C.Pagani, Carlos C. [UNESP]Baccala, Luiz A.2018-11-26T15:44:50Z2018-11-26T15:44:50Z2017-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article485-492application/pdfhttp://dx.doi.org/10.1109/TCI.2017.2721744Ieee Transactions On Computational Imaging. Piscataway: Ieee-inst Electrical Electronics Engineers Inc, v. 3, n. 3, p. 485-492, 2017.2333-9403http://hdl.handle.net/11449/15966610.1109/TCI.2017.2721744WOS:000407503200010WOS000407503200010.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIeee Transactions On Computational Imaginginfo:eu-repo/semantics/openAccess2023-11-23T06:15:43Zoai:repositorio.unesp.br:11449/159666Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:32:32.389343Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays |
title |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays |
spellingShingle |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays Caldas, Luciano C. Aeroacoustic array signal processing fan noise in-duct beamforming power spectral density rotating acoustic imaging |
title_short |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays |
title_full |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays |
title_fullStr |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays |
title_full_unstemmed |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays |
title_sort |
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays |
author |
Caldas, Luciano C. |
author_facet |
Caldas, Luciano C. Greco, Paulo C. Pagani, Carlos C. [UNESP] Baccala, Luiz A. |
author_role |
author |
author2 |
Greco, Paulo C. Pagani, Carlos C. [UNESP] Baccala, Luiz A. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Caldas, Luciano C. Greco, Paulo C. Pagani, Carlos C. [UNESP] Baccala, Luiz A. |
dc.subject.por.fl_str_mv |
Aeroacoustic array signal processing fan noise in-duct beamforming power spectral density rotating acoustic imaging |
topic |
Aeroacoustic array signal processing fan noise in-duct beamforming power spectral density rotating acoustic imaging |
description |
An in-duct rotating beamforming technique, using a wall-mounted array of microphones placed within a long duct, was developed for locating broadband noise sources from an aeroengine fan. The technique was experimentally implemented at the recently constructed long-duct low-speed fan rig test facility at the University of Sao Paulo in Brazil. The test rig has a 16-bladed fan rotor and 14-vaned stator, with speed up to 4250 r/min and a maximum 0.1 Mach number mean axial flow speed. Here, we describe the beamforming details with an emphasis on the mandatory coordinate change to a rotating reference frame for a frequency domain virtual rotating microphone technique. Example sound source maps are presented revealing clear noise blade signatures together with simulated point spread function maps using modal steering vectors at six different frequencies that characterize the beamformer. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09-01 2018-11-26T15:44:50Z 2018-11-26T15:44:50Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1109/TCI.2017.2721744 Ieee Transactions On Computational Imaging. Piscataway: Ieee-inst Electrical Electronics Engineers Inc, v. 3, n. 3, p. 485-492, 2017. 2333-9403 http://hdl.handle.net/11449/159666 10.1109/TCI.2017.2721744 WOS:000407503200010 WOS000407503200010.pdf |
url |
http://dx.doi.org/10.1109/TCI.2017.2721744 http://hdl.handle.net/11449/159666 |
identifier_str_mv |
Ieee Transactions On Computational Imaging. Piscataway: Ieee-inst Electrical Electronics Engineers Inc, v. 3, n. 3, p. 485-492, 2017. 2333-9403 10.1109/TCI.2017.2721744 WOS:000407503200010 WOS000407503200010.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ieee Transactions On Computational Imaging |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
485-492 application/pdf |
dc.publisher.none.fl_str_mv |
Ieee-inst Electrical Electronics Engineers Inc |
publisher.none.fl_str_mv |
Ieee-inst Electrical Electronics Engineers Inc |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128944391585792 |