Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Conference paper
Title: Determining key variables of the kinetic theory of granular flow using DWS
Author: Zivkovic, V.
Berry, K.
Glass, D.
Biggs, M.
Citation: Powders and Grains 2013 : Proceedings of the 7th International Conference on Micromechanics of Granular Media, Sydney, Australia 8–12 July 2013 / A. Yu, K. Dong, R. Yang and S. Luding (eds.): pp.1266-1269
Publisher: AIP Publishing
Publisher Place: Australia
Issue Date: 2013
Series/Report no.: AIP Conference Proceedings ; 1542
ISBN: 9780735411661
ISSN: 0094-243X
Conference Name: International Conference on Micromechanics of Granular Media (7th : 2013 : Sydney, Australia)
Editor: Yu, A.
Dong, K.
Yang, R.
Luding, S.
Statement of
V. Zivkovic, K. Berry, D.H. Glass and M. J. Biggs
Abstract: The granular temperature, pressure and viscosity are three key variables that underpin the kinetic theory of granular flows while they are also playing an increasing role in other contexts such as modelling heat transfer, segregation, erosion, attrition and aggregation in various granular processing technologies. The scarcity of experimental measurements of these quantities is a significant barrier to exploitation of these theories and models. Diffusing wave spectroscopy (DWS) is now a well-established technique for measurement of granular temperature in dense granular systems. Using a liquid-fluidized bed as a test-case, we demonstrate here that DWS can be used to obtain the granular temperature and, via kinetic theory of granular flow expressions for the granular pressure and viscosity. The determined granular temperature and pressure variation with solids fraction compares well with theoretical results of others. The analysis also shows that the granular viscosity estimates obtained from the various kinetic theory models available vary significantly, particularly qualitatively at the low coefficients of restitution thought typical of liquid fluidized beds. © 2013 AIP Publishing LLC.
Keywords: Kinetic theory
Granular pressure
Granular temperature
Granular viscosity
Diffusing Wave Spectroscopy
Rights: © 2013 AIP Publishing
DOI: 10.1063/1.4812169
Published version:
Appears in Collections:Aurora harvest
Chemical Engineering publications

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.