DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jae-Hwa | ko |
dc.contributor.author | Lee, Jin | ko |
dc.contributor.author | Sung, Hyung-Jin | ko |
dc.date.accessioned | 2013-03-09T19:38:25Z | - |
dc.date.available | 2013-03-09T19:38:25Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | JOURNAL OF TURBULENCE, v.12, no.46, pp.1 - 24 | - |
dc.identifier.issn | 1468-5248 | - |
dc.identifier.uri | http://hdl.handle.net/10203/97317 | - |
dc.description.abstract | Coherent wall-normal structures in a turbulent boundary layer (TBL) have been investigated by scrutinizing a direct numerical simulation (DNS) dataset with Re-theta = 2500. It was found that groups of hairpin legs induce wall-normal-aligned structures and these large-scale regions are mostly induced by the combination of the attached and detached vortical structures. By using the feature extraction algorithm, we found that more than approximately 60% of the attached momentum regions extend beyond the log region, while most of the detached regions formed locally away from the wall have relatively short wall-normal extent. The two-point correlation of the streamwise velocity fluctuations showed that the wall-normal length scales vary linearly with the distance from the wall, and, finally, the two-point correlations between the signed swirling motions showed that interactions between counterrotating vortices are predominant throughout the boundary layer and especially frequent in the near-wall region. | - |
dc.language | English | - |
dc.publisher | TAYLOR & FRANCIS LTD | - |
dc.subject | PARTICLE IMAGE VELOCIMETRY | - |
dc.subject | LOGARITHMIC REGION | - |
dc.subject | SPANWISE VORTICES | - |
dc.subject | VORTEX PACKETS | - |
dc.subject | SCALE MOTIONS | - |
dc.subject | CHANNEL FLOW | - |
dc.title | Spatial features of the wall-normal structures in a turbulent boundary layer | - |
dc.type | Article | - |
dc.identifier.wosid | 000299688100001 | - |
dc.type.rims | ART | - |
dc.citation.volume | 12 | - |
dc.citation.issue | 46 | - |
dc.citation.beginningpage | 1 | - |
dc.citation.endingpage | 24 | - |
dc.citation.publicationname | JOURNAL OF TURBULENCE | - |
dc.identifier.doi | 10.1080/14685248.2011.627860 | - |
dc.contributor.localauthor | Sung, Hyung-Jin | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | turbulent boundary layer | - |
dc.subject.keywordAuthor | turbulent structure | - |
dc.subject.keywordAuthor | direct numerical simulation | - |
dc.subject.keywordPlus | PARTICLE IMAGE VELOCIMETRY | - |
dc.subject.keywordPlus | LOGARITHMIC REGION | - |
dc.subject.keywordPlus | SPANWISE VORTICES | - |
dc.subject.keywordPlus | VORTEX PACKETS | - |
dc.subject.keywordPlus | SCALE MOTIONS | - |
dc.subject.keywordPlus | CHANNEL FLOW | - |
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