Bandgap characteristics of phononic crystals in steady and unsteady flows

Cited 10 time in webofscience Cited 6 time in scopus
  • Hit : 374
  • Download : 0
DC FieldValueLanguage
dc.contributor.authorOh, Tae Seokko
dc.contributor.authorJeon, Wonjuko
dc.date.accessioned2020-10-05T00:55:06Z-
dc.date.available2020-10-05T00:55:06Z-
dc.date.created2020-09-04-
dc.date.created2020-09-04-
dc.date.created2020-09-04-
dc.date.issued2020-09-
dc.identifier.citationJOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, v.148, no.3, pp.1181 - 1192-
dc.identifier.issn0001-4966-
dc.identifier.urihttp://hdl.handle.net/10203/276437-
dc.description.abstractOver the past 30 years, most phononic crystal research has been done for a stationary medium. As reported in a recent experimental study, phononic crystals cannot preserve their bandgaps in the presence of flow. In this study, the bandgap characteristics of a two-dimensional phononic crystal in steady and unsteady flows are investigated theoretically. To identify the effect of the flow on sound insulation in the bandgap frequency ranges, the acoustic reflectance spectra of phononic crystals for different types of background flows, including a uniform flow, a compressible potential flow, and a turbulent flow were calculated. For the steady flows, which include uniform and compressible potential flows, the reflectance spectra are shifted to a lower frequency by the factor1-M2due to convection when the flow is in the same direction as the incident wave. Moreover, the reflectance spectra of a phononic crystal in a turbulent flow were evaluated for various combinations of inflow speeds and geometric parameters, such as the filling ratio and the number of layers. Due to the aerodynamic noise and fluid convection, a phononic crystal cannot work as an acoustic barrier, rather it becomes an aeroacoustic source in a turbulent flow.-
dc.languageEnglish-
dc.publisherACOUSTICAL SOC AMER AMER INST PHYSICS-
dc.titleBandgap characteristics of phononic crystals in steady and unsteady flows-
dc.typeArticle-
dc.identifier.wosid000570091800002-
dc.identifier.scopusid2-s2.0-85091786461-
dc.type.rimsART-
dc.citation.volume148-
dc.citation.issue3-
dc.citation.beginningpage1181-
dc.citation.endingpage1192-
dc.citation.publicationnameJOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA-
dc.identifier.doi10.1121/10.0001767-
dc.contributor.localauthorJeon, Wonju-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusSOUND-ATTENUATION-
dc.subject.keywordPlusPERIODIC ARRAYS-
dc.subject.keywordPlusCYLINDERS-
dc.subject.keywordPlusNOISE-
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 10 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0