DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jin | ko |
dc.contributor.author | Lee, Jae-Hwa | ko |
dc.contributor.author | Lee, Joung-Ho | ko |
dc.contributor.author | Sung, Hyung-Jin | ko |
dc.date.accessioned | 2013-03-09T12:32:56Z | - |
dc.date.available | 2013-03-09T12:32:56Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | JOURNAL OF TURBULENCE, v.11, no.28, pp.1 - 20 | - |
dc.identifier.issn | 1468-5248 | - |
dc.identifier.uri | http://hdl.handle.net/10203/96354 | - |
dc.description.abstract | The coherent structures in turbulent boundary layers (TBLs) subjected to adverse pressure gradients (APGs) were investigated by analyzing a database of direct numerical simulations. The equilibrium adverse pressure gradient flows were established by using a power law free-stream distribution. The population trends of the spanwise vortices show that the outer regions of the APG TBLs are densely populated with hairpin-like vortices. These vortical structures induce low-momentum regions in the middle of the boundary layers, which result in an outer peak in the Reynolds shear stress. The 3-D features of the hairpin packets were deduced from their spatial characteristics in the spanwise-wall-normal plane. The conditionally averaged velocity fields show that there are counter-rotating v - w swirling motions that represent cross-sectional evidences of the packets. Moreover, two-point correlations and linear stochastic estimations were used to provide statistical information about the hairpin packet motions in the crossstream planes of the APG TBLs. | - |
dc.language | English | - |
dc.publisher | TAYLOR FRANCIS LTD | - |
dc.subject | DIRECT NUMERICAL-SIMULATION | - |
dc.subject | PARTICLE IMAGE VELOCIMETRY | - |
dc.subject | WALL TURBULENCE | - |
dc.subject | SPANWISE VORTICES | - |
dc.subject | PACKETS | - |
dc.subject | REGION | - |
dc.title | Coherent structures in turbulent boundary layers with adverse pressure gradients | - |
dc.type | Article | - |
dc.identifier.wosid | 000279823700001 | - |
dc.identifier.scopusid | 2-s2.0-77955372424 | - |
dc.type.rims | ART | - |
dc.citation.volume | 11 | - |
dc.citation.issue | 28 | - |
dc.citation.beginningpage | 1 | - |
dc.citation.endingpage | 20 | - |
dc.citation.publicationname | JOURNAL OF TURBULENCE | - |
dc.identifier.doi | 10.1080/14685248.2010.496786 | - |
dc.contributor.localauthor | Sung, Hyung-Jin | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | adverse pressure gradient | - |
dc.subject.keywordAuthor | turbulent boundary layer | - |
dc.subject.keywordAuthor | population trends of spanwise vortices | - |
dc.subject.keywordAuthor | coherent structure | - |
dc.subject.keywordPlus | DIRECT NUMERICAL-SIMULATION | - |
dc.subject.keywordPlus | PARTICLE IMAGE VELOCIMETRY | - |
dc.subject.keywordPlus | WALL TURBULENCE | - |
dc.subject.keywordPlus | SPANWISE VORTICES | - |
dc.subject.keywordPlus | PACKETS | - |
dc.subject.keywordPlus | REGION | - |
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