On the three dimensional interaction between flexible fibers and fluid flow

Bogdan G. Nita, Ryan Allaire

Research output: Contribution to journalArticle

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.

Original languageEnglish
Article number4
JournalFluids
Volume2
Issue number1
DOIs
StatePublished - Mar 2017

Fingerprint

fluid flow
Flow of fluids
fibers
Fibers
interactions
exponents
Fiber reinforced materials
fiber orientation
Flow velocity
Drag
configurations
two dimensional models
drag
flow velocity
Computer simulation
fluids
simulation

Keywords

  • 3D numerical simulations
  • Computational Fluid Dynamics (CFD)
  • Fibers bending in flow
  • Fluid-Solid Interactions (FSI)

Cite this

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On the three dimensional interaction between flexible fibers and fluid flow. / Nita, Bogdan G.; Allaire, Ryan.

In: Fluids, Vol. 2, No. 1, 4, 03.2017.

Research output: Contribution to journalArticle

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