Coupled particle-fluid simulations of the initiation of suffusion

Kawano, K., Shire, T. and O'Sullivan, C. (2018) Coupled particle-fluid simulations of the initiation of suffusion. Soils and Foundations, 58(4), pp. 972-985. (doi:10.1016/j.sandf.2018.05.008)

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Abstract

Suffusion or internal instability is a major form of internal erosion in cohesionless soils. Hypotheses based on experimental work suggest complex micro-scale influences of stress and material fabric on suffusion. This study presents the results of coupled discrete element method – computational fluid dynamics (DEM-CFD) simulations of permeameter tests. These simulations were carried out to study the influence of micro-scale variables on the initiation of particle transport in gap-graded cohesionless soils with varying fines content and relative density. The results highlight the importance of both particle stress and connectivity on the initiation of suffusion. Particles which do not transfer externally applied stress and those with low initial connectivity are shown to be particularly susceptible to suffusion.

Item Type:Articles
Additional Information:This study has been financially supported by Kajima Corporation, Japan. The second author was funded by an EPSRC Doctoral Prize.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Shire, Dr Thomas
Authors: Kawano, K., Shire, T., and O'Sullivan, C.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Soils and Foundations
Publisher:Elsevier
ISSN:0038-0806
ISSN (Online):0038-0806
Published Online:13 August 2018
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