Closed-loop Lagrangian separation control in a bluff body shear flow   model

doi:10.1063/1.1588636

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	Closed-loop Lagrangian separation control in a bluff body shear flow model
	Wang, Y ; Haller, G ; Banaszuk, A ; Tadmor, G
刊名	physics of fluids
	2003
关键词	LOW REYNOLDS-NUMBERS NONLINEAR FEEDBACK-CONTROL BLUNT TRAILING EDGE CYLINDER WAKE COHERENT STRUCTURES TURBULENCE CONTROL CIRCULAR-CYLINDER DRAG REDUCTION ROBUST-CONTROL FLUID-FLOWS
DOI	10.1063/1.1588636
英文摘要	We show how the location of Lagrangian coherent structures, such as unstable manifolds of Lagrangian separation points, can be controlled via feedback control in two-dimensional shear flows. Such control can be used, for instance, to guide fuel transport into designated regions of the flame in a combustor. Motivated by this example, we consider an unsteady vortex model for flow past a bluff body, and create unstable manifolds in this model at prescribed locations by applying control along the boundary. We find that oscillating the newly created unstable manifolds in 1:1 resonance with the von Karman vortex shedding frequency enhances mixing in the wake significantly. (C) 2003 American Institute of Physics.; Mechanics; Physics, Fluids & Plasmas; SCI(E); EI; 0; ARTICLE; 8; 2251-2266; 15
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/256424]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Y,Haller, G,Banaszuk, A,et al. Closed-loop Lagrangian separation control in a bluff body shear flow model[J]. physics of fluids,2003.
APA	Wang, Y,Haller, G,Banaszuk, A,&Tadmor, G.(2003).Closed-loop Lagrangian separation control in a bluff body shear flow model.physics of fluids.
MLA	Wang, Y,et al."Closed-loop Lagrangian separation control in a bluff body shear flow model".physics of fluids (2003).