Representation of capillary forces in polydisperse granular assemblies in the pendular regime

Faramarzi, Asaad, Harireche, Ouahid and Alani, Amir (2014) Representation of capillary forces in polydisperse granular assemblies in the pendular regime. In: Numerical Methods in Geotechnical Engineering. CRC Press, London, UK, pp. 363-366. ISBN 9781138001466

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Abstract

In this paper, the equations governing capillary forces between polydisperse spheres in the pendular regime are presented. These equations are adopted within the Laplace-Young framework using a Toroidal approximation of the liquid bridge geometry. Based on the numerical solution of the fundamental problem and a novel evolutionary computing technique (EPR), an analytical expression is developed for the prediction of capillary force. The analytical expression accounts for the effects of intrinsic parameters such as inter-particle separation distance, ratio of particle radii and liquid volume. Such a representation of capillary forces is shown to mimic the real behaviour with a good accuracy. The developed model can be implemented in discrete element computer simulations as it does not require any iterations to update contact forces at particle level.

Item Type: Book Section
Subjects: Construction and engineering > Built environment
Construction and engineering > Civil and structural engineering
Construction and engineering
Depositing User: Fabio Tosti
Date Deposited: 26 May 2016 10:38
Last Modified: 07 Jul 2017 09:41
URI: http://repository.uwl.ac.uk/id/eprint/2152

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