Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/44841
DC FieldValueLanguage
dc.contributor.authorKuo, C.H.en_US
dc.contributor.author郭正雄zh_TW
dc.contributor.authorYang, D.C.en_US
dc.date2010zh_TW
dc.date.accessioned2014-06-06T08:13:55Z-
dc.date.available2014-06-06T08:13:55Z-
dc.identifier.issn0169-5983zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/44841-
dc.description.abstractThe present study reveals the potential of investigating the lock-on characteristics of a cavity shear layer with hysteretic character using wavelet analysis. The velocity fluctuation is measured by the laser Doppler anemometry system. The rectangular cavity has a length-to-depth ratio (L/D) of 3, in which hysteretic character occurs for incoming velocities ranging from 10 to 20 cm s(-1). A small cylinder is situated very close to the upstream corner of the cavity to generate periodic excitations at various frequencies in the form of rotary oscillation about its center. The amplitude of tangential velocity is kept constant. The results analyzed by Fourier and wavelet transformations are compared. It is found that, for cavity flows with hysteresis, the frequency bandwidth of the lock-on region lies between the low and high frequencies of the two oscillation modes, and this frequency bandwidth of the lock-on regions is better defined by using wavelet analysis.en_US
dc.language.isoen_USzh_TW
dc.relationFluid Dynamics Researchen_US
dc.relation.ispartofseriesFluid Dynamics Research, Volume 42, Issue 4.en_US
dc.relation.urihttp://dx.doi.org/10.1088/0169-5983/42/4/045508en_US
dc.subjectself-sustained oscillationsen_US
dc.subjectreynolds-numberen_US
dc.subjectshear-layeren_US
dc.subjecttransformsen_US
dc.subjectcylindersen_US
dc.subjectplateen_US
dc.subjectwallen_US
dc.titleWavelet analysis on lock-on of cavity flows with hysteresisen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1088/0169-5983/42/4/045508zh_TW
item.languageiso639-1en_US-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.openairetypeJournal Article-
item.fulltextno fulltext-
item.grantfulltextnone-
Appears in Collections:機械工程學系所
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