난류채널유동에서의 준최적제어 평가Evaluation of Suboptimal Control in Turbulent Channel Flow
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | 최정일 | ko |
| dc.contributor.author | 성형진 | ko |
| dc.date.accessioned | 2013-03-03T22:26:30Z | - |
| dc.date.available | 2013-03-03T22:26:30Z | - |
| dc.date.created | 2012-02-06 | - |
| dc.date.created | 2012-02-06 | - |
| dc.date.issued | 2001-09 | - |
| dc.identifier.citation | 대한기계학회논문집 B, v.25, no.9, pp.1227 - 1236 | - |
| dc.identifier.issn | 1226-4881 | - |
| dc.identifier.uri | http://hdl.handle.net/10203/80723 | - |
| dc.description.abstract | A systematic analysis is made of suboptimal control for drag reduction. The influence of the amplitude of actuation (A) and the time scale of actuation (Δt(sub)a(sup)+) is evaluated. Two wall sensing variables are employed (∂w/∂y│(sub)w and ∂p/∂z│(sub)w) with two wall actuations (Φ2and Φ3). To test the suboptimal control, direct numerical simulations of turbulent channel flow at Re(sub)τ=100 are performed in a spectral domain. It is found that the effect of A and Δt(sub)a(sup)+∼1. The near-wall behaviors of flow structure are analyzed to characterize the drag reduction. The size effect of the sensor/actuator is examined. | - |
| dc.language | Korean | - |
| dc.publisher | 대한기계학회 | - |
| dc.title | 난류채널유동에서의 준최적제어 평가 | - |
| dc.title.alternative | Evaluation of Suboptimal Control in Turbulent Channel Flow | - |
| dc.type | Article | - |
| dc.type.rims | ART | - |
| dc.citation.volume | 25 | - |
| dc.citation.issue | 9 | - |
| dc.citation.beginningpage | 1227 | - |
| dc.citation.endingpage | 1236 | - |
| dc.citation.publicationname | 대한기계학회논문집 B | - |
| dc.contributor.localauthor | 성형진 | - |
| dc.contributor.nonIdAuthor | 최정일 | - |
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