DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이재화 | ko |
dc.contributor.author | 성형진 | ko |
dc.date.accessioned | 2013-03-09T13:18:40Z | - |
dc.date.available | 2013-03-09T13:18:40Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2009-12 | - |
dc.identifier.citation | 대한기계학회논문집 B, v.33, no.12, pp.977 - 982 | - |
dc.identifier.issn | 1226-4881 | - |
dc.identifier.uri | http://hdl.handle.net/10203/96448 | - |
dc.description.abstract | Direct numerical simulation (DNS) of a turbulent boundary layer with moderate Reynolds number was performed to scrutinize streamwise-coherence of hairpin packet motions. The Reynolds number based on the momentum thickness (θin) and free-stream velocity (U∞) was varied in the range Reθ=1410~2540 which was higher than the previous numerical simulations in the turbulent boundary layer. In order to include the groups of hairpin packets existing in the outer layer, large computational domain was used (more than 50δo, where δo is the boundary layer thickness at the inlet in the streamwise domain). Characteristics of packet motions were investigated by using instantaneous flow fields, two-point correlation and conditional average flow fields in xy-plane. The present results showed that a train of hairpin packet motions was propagating coherently along the downstream and these structures induced the very large-scale motions in the turbulent boundary layer. | - |
dc.language | Korean | - |
dc.publisher | 대한기계학회 | - |
dc.title | 직접수치모사를 이용한 난류경계층 내의 거대난류구조 연구 | - |
dc.title.alternative | A Direct Numerical Simulation Study on the very Large-Scale Motion in Turbulent Boundary Layer | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 33 | - |
dc.citation.issue | 12 | - |
dc.citation.beginningpage | 977 | - |
dc.citation.endingpage | 982 | - |
dc.citation.publicationname | 대한기계학회논문집 B | - |
dc.identifier.kciid | ART001392799 | - |
dc.contributor.localauthor | 성형진 | - |
dc.contributor.nonIdAuthor | 이재화 | - |
dc.subject.keywordAuthor | Very Large-Scale Motion(거대난류구조) | - |
dc.subject.keywordAuthor | Turbulent Boundary Layer(난류경계층) | - |
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