DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박영수 | ko |
dc.contributor.author | 박상현 | ko |
dc.contributor.author | 성형진 | ko |
dc.date.accessioned | 2013-03-04T22:27:01Z | - |
dc.date.available | 2013-03-04T22:27:01Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2003-04 | - |
dc.identifier.citation | 한국가시화정보학회지, v.1, no.1, pp.64 - 74 | - |
dc.identifier.issn | 1598-8430 | - |
dc.identifier.uri | http://hdl.handle.net/10203/84414 | - |
dc.description.abstract | An experimental study was carried out to investigate the effect of periodic blowing and suction on a turbulent boundary layer. Particle image velocimetry (PIV) was used to probe the characteristics of the flow. The local forcing was introduced to the boundary layer via a sinusoidally-oscillating jet issuing from a thin spanwise slot. Three forcing frequencies (f+=0.044, 0.066 and 0.088) with a fixed forcing amplitude (A+=0.6) were employed at $Re_{=690. The effect of the forcing angles (α=60o , 90o and 120o ) was investigated under the fixed forcing frequency (f+=0.088). The PIV results showed that the wall region velocity decreases on imposition of the local forcing. Inspection of phase-averaged velocity profiles revealed that spanwise large-scale vortices were generated in the downstream of the slot and persist further downstream. The highest reduction in skin friction was achieved at highest forcing frequency (f+=0.088) and a forcing angle of α=120o. The spatial fraction of the vortices was examined to analyze the skin friction reduction. | - |
dc.language | Korean | - |
dc.publisher | 한국가시화정보학회 | - |
dc.title | 주기적인 분사/흡입이 난류경계층에 미치는 영향 | - |
dc.title.alternative | Influence of Periodic Blowing and Suction on a Turbulent Boundary Layer | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 1 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 64 | - |
dc.citation.endingpage | 74 | - |
dc.citation.publicationname | 한국가시화정보학회지 | - |
dc.contributor.localauthor | 성형진 | - |
dc.contributor.nonIdAuthor | 박영수 | - |
dc.contributor.nonIdAuthor | 박상현 | - |
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