Near wall effects in the plug flow of pulp suspensions
Journal article, 2011

Experimental data by the authors are further analysed to gain a more detailed understanding of the mechanisms of the plug flow and near-wall behaviour in the pipe flow of pulp suspensions at concentrations up to 4.7% by weight. The results indicate two-phase flow effects near the wall, one being that the apparent viscosity is higher than that of water. Another is that the wall shear stress estimated with the pressure drop data and a force balance is much higher than the one obtained with the measured velocity profile, indicating the presence of mechanical friction forces.

pulp suspensions

flow models

yield-stress

flow mechanisms

pipe-flow

uvp

cfd

plug flow

fiber suspensions

dynamics

Author

Helena Fock

Chalmers, Chemical and Biological Engineering, Chemical Engineering Design

Julia Claesson

Chalmers, Chemical and Biological Engineering, Chemical Engineering Design

Anders Rasmuson

Wallenberg Wood Science Center (WWSC)

Chalmers, Chemical and Biological Engineering, Chemical Engineering Design

T. Wikstrom

Metso Paper

Canadian Journal of Chemical Engineering

0008-4034 (ISSN) 1939019x (eISSN)

Vol. 89 5 1207-1216

Subject Categories

Chemical Sciences

DOI

10.1002/cjce.20471

More information

Latest update

8/27/2018