Interaction of two tandem flexible flags in a viscous flow = 점성 유동 내에 일렬로 나란히 배열된 유연한 깃발 간의 상호작용

Two tandem flexible flags in a viscous flow were modeled by numerical simulation using an improved version of the immersed boundary (IB) method. Flexible flapping flags and the vortices produced by an upstream flag were found to interact via either constructive or destructive mode. These interaction modes gave rise to significant differences in the drag force acting on the downstream flapping flag in a viscous flow. The constructive mode increased the drag force while the destructive mode decreased the drag force. Drag on the downstream flexible body was investigated as a function of the streamwise and spanwise gap distances, and the bending coefficient of the flexible flags at intermediate Reynolds numbers ($200 \le Re \le 400$). In addition, pitching and heaving motions were applied to a downstream flag, in order to change the interaction modes regardless of the gap distances and the bending coefficient.
Advisors
Sung, Hyung-Jinresearcher성형진researcher
Publisher
한국과학기술원
Issue Date
2011
Identifier
467568/325007  / 020093094
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학전공, 2011.2, [ iv, 45 p. ]

Keywords

Swimming; Flexible flags; Immersed boundary method; Fluid-structure interaction; Tandem arrangement; 나란한 배열; 유영; 유연한 깃발; 가상경계법; 유체-연성체 상호작용

URI
http://hdl.handle.net/10203/45842
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=467568&flag=t
Appears in Collection
ME-Theses_Master(석사논문)
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