A numerical model of the motion of a curved flexible fibre in a shear flow
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A numerical model of the motion of a curved flexible fibre in a shear flow

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Published by National Library of Canada = Bibliothèque nationale du Canada in Ottawa .
Written in English


Book details:

Edition Notes

SeriesCanadian theses = Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches.
ID Numbers
Open LibraryOL18623220M
ISBN 100612293750
OCLC/WorldCa46575141

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We propose an optimization method to simulate the motion of long flexible fibers in shear flow. The fiber is modeled as spheres connected by massless rigid rods and ball-socket joints.   A numerical model for the behavior of flexible fibers under inertial flows was developed by coupling discrete element method and finite volume method. The fibers were discretized into several beam segments, and the equations of motion were integrated with a 2nd order accurate explicit by: In fluid mechanics, the term shear flow (or shearing flow) refers to a type of fluid flow which is caused by forces, rather than to the forces a shearing flow, adjacent layers of fluid move parallel to each other with different speeds. Viscous fluids resist this shearing motion. For a Newtonian fluid, the stress exerted by the fluid in resistance to the shear is proportional to. 'On the motion of flexible threads in a Stoke's shear field' J Non-Newtonian Fluid Mechanics 13 () pp 7 Bonano, E. J. 'A numerical solution of the Goddard-Huang equations for the shape of a fibre in flowing concentrated suspensions' IntJ Multiphase Flow 10 5 () pp 8 Hineh, E. by: 3.

XXIV ICTAM, August , Montreal,Canada THREE MODES OF THE DYNAMICS OF FLEXIBLE FIBERS IN SHEAR FLOW AgnieszkaM. Słowicka 1, Howard A. Stone2, Eligiusz Wajnryb, and Maria L. Ekiel-Jez˙ewska∗ 1Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b, Warsaw,´ Poland 2Department of Mechanical and Aerospace Engineering, . The numerical results show that an unconstrained flexible body would turn over forward along the airflow’s diffusion direction, while a constrained flexible body in the flow field will make a periodic rotation motion along the axis of the flexible body, and the bending deformation is more obvious than that of unconstrained flexible : Peifeng Lin, Wenqian Xu, Yuzhen Jin, Zefei Zhu. A discrete element method (DEM) model is developed to simulate the dynamics of wet, flexible fibers. The angles of repose of dry and wet fibers are simulated, and the simulation results are in good agreement with experimental results, validating the wet, flexible fiber model. To study wet fiber flow behavior Industry R&D collectionCited by: 4. The dynamical system governing the motion of a curved rigid two-dimensional circular-arc fiber in simple shear is derived in analytical form. This is achieved by finding the solution for the associated low-Reynolds-number flow around such a fiber using the methods of complex analysis. Solutions of the dynamical system display the “flipping” and “scooping” recently observed in Cited by: 3.

– Shear flow • • Open part (for anticlockwise of q, s) • Constant twist part • The q(0) is related to the closed part of the section, but there is a q o (s) in the open part which should be considered for the shear torque Beam shearing: linear elasticity summary y z T T z T . Figure 4: Configuration of a lamellar fluid when a shear flow is applied. The shear velocities are v = 0 (a), v = (b), and v = (c) (Gonnella et al ). Figure 5: A sandstone sample used in the multiphase LBM simulation (top left).Cited by: A rod-chain model was used to study the dynamics of a long flexible fiber which is suspended in a Newtonian fluid. It was shown that the fiber exhibited different apparent flexibility, which depended on the stiffness of the fiber, the strength of the flow field and the initial configuration of the by:   The results of a numerical calculation of the unsteady shear flow of a viscous incompressible fluid in a cavity with moving lids are given for various geometries and values of the Reynolds number. The paper describes the numerical method developed for solving the three-dimensional unsteady Navier-Stokes equations in a regular domain and also the direct method of Cited by: 1.