A wall-bounded turbulent mixing layer flow over an open step: I. Time-mean and spectral characteristics

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dc.contributor.authorLiu, Ying Zhengko
dc.contributor.authorKe, Fengko
dc.contributor.authorChen, Han Pingko
dc.contributor.authorSung, Hyung Jinko
dc.date.accessioned2009-11-30T05:44:44Z-
dc.date.available2009-11-30T05:44:44Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2006-
dc.identifier.citationJOURNAL OF TURBULENCE, v.7, no.65, pp.1 - 17-
dc.identifier.issn1468-5248-
dc.identifier.urihttp://hdl.handle.net/10203/13674-
dc.description.abstractThe time-mean and spectral characteristics of a wall-bounded turbulent mixing layer flow over an open step were investigated experimentally. Extensive spatio-temporal measurements of the wall pressure fluctuations and velocity fluctuations were performed using a microphone array and an X-type gold-plated hotwire probe, respectively. Air flow was entrained through the open step, forming a wall-bounded turbulent mixing layer flow. Three flow configurations, with step heights of H/delta = 0.67, 1.00 and 1.67 (delta was defined as the boundary layer thickness 2 mm upstream of the step edge), were chosen to examine the influence of the step height on the evolution of the wall-bounded turbulent mixing layer. As the step height increased from H/delta = 0.67 to 1.67, the velocity fluctuations and the associated wall pressure fluctuations were intensified due to enhancement of the large-scale vortical structures. Moreover, as the step height was increased over this range, the inclination of the large-scale vortical structure varied from backward to forward, causing elevation of the wall-bounded turbulent mixing layer. The contribution of the local flow structures to the wall pressure fluctuations increased with increasing step height.-
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherTAYLOR FRANCIS LTD-
dc.subjectPRESSURE FLUCTUATIONS-
dc.subjectREATTACHING FLOW-
dc.subjectSEPARATION BUBBLE-
dc.subjectSHEAR-LAYER-
dc.subjectVORTICES-
dc.subjectREGION-
dc.subjectZONE-
dc.titleA wall-bounded turbulent mixing layer flow over an open step: I. Time-mean and spectral characteristics-
dc.typeArticle-
dc.identifier.wosid000242548100001-
dc.identifier.scopusid2-s2.0-33845891052-
dc.type.rimsART-
dc.citation.volume7-
dc.citation.issue65-
dc.citation.beginningpage1-
dc.citation.endingpage17-
dc.citation.publicationnameJOURNAL OF TURBULENCE-
dc.identifier.doi10.1080/14685240600939867-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorSung, Hyung Jin-
dc.contributor.nonIdAuthorLiu, Ying Zheng-
dc.contributor.nonIdAuthorKe, Feng-
dc.contributor.nonIdAuthorChen, Han Ping-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorentrainment-
dc.subject.keywordAuthorturbulent mixing layer-
dc.subject.keywordAuthorwall pressure fluctuations-
dc.subject.keywordAuthorlarge-scale vortical structure-
dc.subject.keywordPlusPRESSURE FLUCTUATIONS-
dc.subject.keywordPlusREATTACHING FLOW-
dc.subject.keywordPlusSEPARATION BUBBLE-
dc.subject.keywordPlusSHEAR-LAYER-
dc.subject.keywordPlusVORTICES-
dc.subject.keywordPlusREGION-
dc.subject.keywordPlusZONE-
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