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Fluids 2017, 2(1), 4; doi:10.3390/fluids2010004

On the Three Dimensional Interaction between Flexible Fibers and Fluid Flow

1
Department of Mathematical Sciences, Montclair State University, Montclair, NJ 07043, USA
2
Department of Mathematical Sciences, New Jersey Institute of Technology, Newark, NJ 07102, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Mehrdad Massoudi
Received: 27 October 2016 / Revised: 10 January 2017 / Accepted: 12 January 2017 / Published: 22 January 2017
(This article belongs to the Special Issue Mechanics of Fluid-Particles Systems and Fluid-Solid Interactions)
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Abstract

In this paper we discuss the deformation of a flexible fiber clamped to a spherical body and immersed in a flow of fluid moving with a speed ranging between 0 and 50 cm/s by means of three dimensional numerical simulation developed in COMSOL . The effects of flow speed and initial configuration angle of the fiber relative to the flow are analyzed. A rigorous analysis of the numerical procedure is performed and our code is benchmarked against well established cases. The flow velocity and pressure are used to compute drag forces upon the fiber. Of particular interest is the behavior of these forces as a function of the flow speed and fiber orientation. The Vogel exponents, which characterize the rate of bending of a fiber in a flow, are found for the various configurations examined here and seem to display interesting variations. These exponents are then compared with our previously studied two-dimensional models. View Full-Text
Keywords: Fluid-Solid Interactions (FSI); 3D numerical simulations; fibers bending in flow; Computational Fluid Dynamics (CFD) Fluid-Solid Interactions (FSI); 3D numerical simulations; fibers bending in flow; Computational Fluid Dynamics (CFD)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Nita, B.G.; Allaire, R. On the Three Dimensional Interaction between Flexible Fibers and Fluid Flow. Fluids 2017, 2, 4.

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