Micromechanical simulation of hydraulic erosion instabilities

Harshani, H. M. D., Galindo-Torres, S. A. and Scheuermann, A. (2015). Micromechanical simulation of hydraulic erosion instabilities. In: Liang Cheng, Scott Draper and Hongwei An, Scour and Erosion. 7th International Conference on Scour and Erosion, ICSE 2014, Perth, WA, Australia, (183-187). 2-4 December 2014. doi:10.1201/b17703-22

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Author Harshani, H. M. D.
Galindo-Torres, S. A.
Scheuermann, A.
Title of paper Micromechanical simulation of hydraulic erosion instabilities
Conference name 7th International Conference on Scour and Erosion, ICSE 2014
Conference location Perth, WA, Australia
Conference dates 2-4 December 2014
Proceedings title Scour and Erosion
Series Scour and Erosion
Place of Publication London, United Kingdom
Publisher Taylor & Francis
Publication Year 2015
Sub-type Fully published paper
DOI 10.1201/b17703-22
Open Access Status Not Open Access
ISBN 9781138027329
9781315723594
Editor Liang Cheng
Scott Draper
Hongwei An
Start page 183
End page 187
Total pages 5
Chapter number 19
Total chapters 96
Collection year 2016
Language eng
Abstract/Summary When water flows through a graded soil there is always the possibility of erosion of finer particles. Though numerous studies have been conducted in the past, only little is known about the micro-mechanics of different phases of erosion. However, it is important to better understand the conditions leading to the initiation of erosion and the hydro-mechanical interactions between the liquid phases (water and fluidised particles) and the solid skeleton to be able to improve and develop new criteria for the assessment of erosion. The presented work explores the simulation capabilities of micro scale erosion by coupling Lattice Boltzmann Method (LBM) and Discrete Element Method (DEM). The LBM simulates fluid flow within pore space while particle dynamics are modelled using the DEM. The coupling law is proposed with the momentum transfer between the fluid and the particles in contact. The effect of the hydraulic load on soil particles at particle scale can be quantified. Clear observations can be seen related to the characteristics of fluid flow through the porous medium and the critical hydraulic gradient leading to particle movements.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Civil Engineering Publications
Official 2016 Collection
 
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