DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Hyeonseong | ko |
dc.contributor.author | Kim, Daegyoum | ko |
dc.date.accessioned | 2018-12-20T08:00:32Z | - |
dc.date.available | 2018-12-20T08:00:32Z | - |
dc.date.created | 2018-11-29 | - |
dc.date.created | 2018-11-29 | - |
dc.date.created | 2018-11-29 | - |
dc.date.created | 2018-11-29 | - |
dc.date.issued | 2019-01 | - |
dc.identifier.citation | JOURNAL OF FLUIDS AND STRUCTURES, v.84, pp.18 - 35 | - |
dc.identifier.issn | 0889-9746 | - |
dc.identifier.uri | http://hdl.handle.net/10203/248663 | - |
dc.description.abstract | Fluid–structure interaction of an inverted flag, which has a free leading edge and a clamped trailing edge, has drawn attention recently because of its novel properties such as divergence stability, a low stability threshold, and large-amplitude flapping motion. In this study, the stability and flapping behaviors of dual inverted flags with finite height are investigated for a side-by-side arrangement, and their noticeable characteristics are compared to those of dual conventional flags. The critical velocity at which the inverted flags break the equilibrium of a straight configuration reduces monotonically when a gap distance between the two flags becomes smaller and an aspect ratio becomes larger, which is also predicted by our linear stability analysis using simple theoretical models of two-dimensional flags and slender flags. After bifurcation, in addition to the synchronized in-phase and out-of-phase modes commonly observed in dual conventional flags, a novel attached mode appears which is mainly observed for small gap distance and small aspect ratio. In this non-linear mode, the leading edges of the two inverted flags touch each other on a midline, and the deformed inverted flags maintain static equilibrium. In a non-linear flapping regime, a new mechanism of a mode transition from an out-of-phase mode to an in-phase mode is identified, which is allowed by the collision of the two flags flapping with large amplitude. | - |
dc.language | English | - |
dc.publisher | ACADEMIC PRESS | - |
dc.title | Stability and coupled dynamics of three-dimensional dual inverted flags | - |
dc.type | Article | - |
dc.identifier.wosid | 000457668200002 | - |
dc.identifier.scopusid | 2-s2.0-85056002358 | - |
dc.type.rims | ART | - |
dc.citation.volume | 84 | - |
dc.citation.beginningpage | 18 | - |
dc.citation.endingpage | 35 | - |
dc.citation.publicationname | JOURNAL OF FLUIDS AND STRUCTURES | - |
dc.identifier.doi | 10.1016/j.jfluidstructs.2018.10.005 | - |
dc.contributor.localauthor | Kim, Daegyoum | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Inverted flag | - |
dc.subject.keywordAuthor | Dual flags | - |
dc.subject.keywordAuthor | Stability | - |
dc.subject.keywordAuthor | Coupled dynamics | - |
dc.subject.keywordAuthor | Flapping | - |
dc.subject.keywordPlus | FLAPPING DYNAMICS | - |
dc.subject.keywordPlus | AEROELASTIC INSTABILITY | - |
dc.subject.keywordPlus | FLEXIBLE PLATES | - |
dc.subject.keywordPlus | UNIFORM | - |
dc.subject.keywordPlus | FLUTTER | - |
dc.subject.keywordPlus | SYNCHRONIZATION | - |
dc.subject.keywordPlus | FILAMENTS | - |
dc.subject.keywordPlus | MODEL | - |
dc.subject.keywordPlus | FLOW | - |
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