Viscosity of curved fibers in suspension
type: Item
instance of: scholarly article
title: Viscosity of curved fibers in suspension
zbMATH Open document ID: 1098.76639
DOI: 10.1016/S0377-0257(01)00163-X
author: C. G. Joung
author: N. Phan-Thien
author: X.-J. Fan
published in: Journal of Non-Newtonian Fluid Mechanics
publication date: 2002-05-15T00:00:00Z
review text: In this paper, the relationship between fiber shape and relative viscosity of a fiber suspension is explored. A numerical simulation has been used to model non-Brownian curved rigid fibers in suspension under the influence of Newtonian shear flow. Curvature in the simulated fibers was taken to represent general deformities of real fibers in suspension. The simulation method was previously used by \textit{C. G. Joung} et al. [J. Non-Newtonian Fluid Mech. 99, No. 1, 1--36 (2001; Zbl 1066.76527)] to determine suspension viscosity for flexible fibers in suspension. When compared to the equivalent straight rigid fiber suspension, fiber curvature was found to contribute to a large increase in suspension viscosity. For typical semi-concentrated to concentrated suspensions, curved fibers were observed to produce viscosity increases of the order twice that of straight fiber suspensions. Results indicate that even a small bend in the fibers may cause a large bulk viscosity increase. Suspension viscosity is therefore highly dependent on the quality control measures taken during sample preparation.
Mathematics Subject Classification ID: 76T20
zbMATH DE Number: 1742020
zbMATH Keywords: Direct simulation
zbMATH Keywords: Flexible fibers
zbMATH Keywords: Suspension viscosity
zbMATH Keywords: Bent fibers
zbMATH Keywords: Curved fibers
MaRDI profile type: Publication
full work available at URL: s0377-0257(01)00163-x
OpenAlex ID: W2067053807
description: scientific article; zbMATH DE number 1742020