Autor segons l'article: Norouzi, MohammadJavad; Andric, Jelena; Vernet, Anton; Pallares, Jordi;
Departament: Enginyeria Mecànica
Autor/s de la URV: Norouzi, Mohammadjavad / Pallarés Curto, Jorge María / Vernet Peña, Antonio
Paraules clau: Transport Suspensions Shear Particles Orientation Motion Microtubules Elastic fibers Dynamics
Resum: The present work studies numerically the dynamics and shape evolution of long flexible fibers suspended in a Newtonian viscous cellular flow using a particle-level fiber simulation technique. The fiber is modeled as a chain of massless rigid cylindrical segments connected by ball and socket joints; one-way coupling between the fibers and the flow is considered while Brownian motion is neglected. The effect of stiffness, equilibrium shape, and aspect ratio of the fibers on the shape evolution of the fibers are analyzed. Moreover, the influence of fiber stiffness and their initial positions and orientations on fiber transport is investigated. For the conditions considered, the results show that the fiber curvature field resembles that of the flow streamline. It is found that the stiffer fibers experience not only a quicker relaxation phase, in which they transient from their initial shape to their "steady-state shape," but they also regain their equilibrium shape to a larger extent. The findings also demonstrate that even a small deviation of fiber shape from perfectly straight impacts significantly the early-stage evolution of the fiber shape and their bending behavior. Increasing the fiber aspect ratio, when other parameters are kept fixed, leads the fiber to behave more flexible, and it consequently deforms to a larger extent to adjust to the shape of the flow streamlines. In agreement with the available experimental results, the fiber transport studies show that either the fiber becomes trapped within the vortices of the cellular array or it moves across the vortical arrays while exhibiting various complex shapes.
Àrees temàtiques: Mechanics Mechanical engineering Matemática / probabilidade e estatística Interdisciplinar Engenharias iii Engenharias i Computational mechanics Ciência da computação Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: mohammadjavad.norouzi@estudiants.urv.cat mohammadjavad.norouzi@estudiants.urv.cat anton.vernet@urv.cat jordi.pallares@urv.cat
Identificador de l'autor: 0000-0002-7719-577X 0000-0002-7719-577X 0000-0002-7028-1368 0000-0003-0305-2714
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://link.springer.com/article/10.1007/s00707-022-03205-7
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Acta Mechanica. 233 (5): 2077-2091
Referència de l'ítem segons les normes APA: Norouzi, MohammadJavad; Andric, Jelena; Vernet, Anton; Pallares, Jordi; (2022). Shape evolution of long flexible fibers in viscous flows. Acta Mechanica, 233(5), 2077-2091. DOI: 10.1007/s00707-022-03205-7
DOI de l'article: 10.1007/s00707-022-03205-7
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications