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dc.contributorDepartment of Building Services Engineeringen_US
dc.creatorCai, Cen_US
dc.creatorMak, CMen_US
dc.date.accessioned2018-08-28T01:32:49Z-
dc.date.available2018-08-28T01:32:49Z-
dc.identifier.issn0003-682Xen_US
dc.identifier.urihttp://hdl.handle.net/10397/77504-
dc.language.isoenen_US
dc.publisherPergamon Pressen_US
dc.rights© 2018 Elsevier Ltd. All rights reserved.en_US
dc.rights© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.rightsThe following publication Cai, C., & Mak, C. M. (2018). Hybrid noise control in a duct using a periodic dual Helmholtz resonator array. Applied Acoustics, 134, 119-124 is available at https://doi.org/10.1016/j.apacoust.2018.01.015.en_US
dc.subjectDual Helmholtz resonatoren_US
dc.subjectHybrid noise controlen_US
dc.subjectPeriodicen_US
dc.subjectTransmission lossen_US
dc.titleHybrid noise control in a duct using a periodic dual Helmholtz resonator arrayen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage119en_US
dc.identifier.epage124en_US
dc.identifier.volume134en_US
dc.identifier.doi10.1016/j.apacoust.2018.01.015en_US
dcterms.abstractThis paper focuses on the hybrid noise control in a duct using a periodic dual Helmholtz resonator (HR) array. A dual HR which consists of two HRs connected in series (neck-cavity-neck-cavity) leads to two resonance frequencies. A dual HR is analogous to a two degrees of freedom mechanical system. Based on the lumped model, the resonance frequencies and transmission loss of a dual HR have been derived. However, a dual HR is only effective at its resonance peaks with relative narrow bands. Aiming at broader noise attenuation bands for hybrid noise control at low frequencies, a periodic dual HR array is proposed in this paper. The wave propagation in a duct mounted with a periodic dual HR array is investigated theoretically and numerically. The Bragg wave theory and transfer matrix method are developed to conduct the investigation. The predicted theoretical results fit well with the Finite Element Method. Owing to the coupling of Bragg reflection and dual HR's resonances, a periodic dual array can provide much broader noise attenuation bands at the designed resonance frequencies of the dual HR. The proposed periodic dual HR array can be used in practical engineering work to reduce hybrid noise at low frequencies.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationApplied acoustics, May 2018, v. 134, p. 119-124en_US
dcterms.isPartOfApplied acousticsen_US
dcterms.issued2018-05-
dc.identifier.isiWOS:000426228900014-
dc.identifier.scopus2-s2.0-85041471306-
dc.identifier.eissn1872-910Xen_US
dc.identifier.rosgroupid2017006385-
dc.description.ros2017-2018 > Academic research: refereed > Publication in refereed journalen_US
dc.description.validate201808 bcrcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberRGC-B3-0494-
dc.description.fundingSourceRGCen_US
dc.description.pubStatusPublisheden_US
dc.description.oaCategoryGreen (AAM)en_US
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