On the equilibrium configurations of flexible fibers in a flow

On the equilibrium configurations of flexible fibers in a flow

We discuss the equilibrium configurations of a fiber clamped to a spherical body and immersed in a flow ranging between 0 and 50cm/s. Experimental and numerical results are presented and the effects of flow speed and positioning of the fiber upon the equilibrium configuration are investigated. Our i...

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Bibliographic Details
Published in:International journal of non-linear mechanics Vol. 69; pp. 157 - 165
Main Authors: Allaire, Ryan, Guerron, Pamela, Nita, Bogdan, Nolan, Peter, Vaidya, Ashwin
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-03-2015
Subjects:
Bending
Computer simulation
Drag
Exponents
Fiber
Fibers
Mathematical models
Nonlinearity
Orientation
Vortex shedding
Bending
Vortex shedding
Fiber
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Summary:We discuss the equilibrium configurations of a fiber clamped to a spherical body and immersed in a flow ranging between 0 and 50cm/s. Experimental and numerical results are presented and the effects of flow speed and positioning of the fiber upon the equilibrium configuration are investigated. Our investigations reveal that the orientation of the fiber and its length has a significant impact upon its bending and drag experienced by the sphere-fiber system. We note that the longer fibers (i) bend significantly more than the shorter ones and (ii) display oscillatory or flapping motion at much lower flow speeds than their shorter counterparts. The simulations also reveal that the drag on the fiber is noticeably effected by the size of the basal body. Drag exponents (or Vogel exponents) are also computed and seen to deviate slightly from previous results. •The problem of a flexible fiber attached to a basal body in a flow is examined.•The effects of flow, fiber length and initial fiber orientation upon the equilibrium bending of the fiber are studied.•Experimental observations have been compared with two-dimensional numerical simulations.
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ISSN:0020-7462
1878-5638
DOI:10.1016/j.ijnonlinmec.2014.12.005