Simulation of fines migration using a non-Newtonian lattice Boltzmann-discrete element model Part II: 3D extension and applications

Leonardi, C. R., Owen, D. R. J. and Feng, Y. T. (2012) Simulation of fines migration using a non-Newtonian lattice Boltzmann-discrete element model Part II: 3D extension and applications. Engineering Computations, 29 3-4: 392-418. doi:10.1108/02644401211227635


Author Leonardi, C. R.
Owen, D. R. J.
Feng, Y. T.
Title Simulation of fines migration using a non-Newtonian lattice Boltzmann-discrete element model Part II: 3D extension and applications
Journal name Engineering Computations   Check publisher's open access policy
ISSN 0264-4401
1758-7077
Publication date 2012-01
Sub-type Article (original research)
DOI 10.1108/02644401211227635
Volume 29
Issue 3-4
Start page 392
End page 418
Total pages 27
Place of publication Bingley, United Kingdom
Publisher Emerald Group Publishing
Collection year 2013
Language eng
Formatted abstract
Purpose – The purpose of this paper is to present a novel computational framework based on the lattice Boltzmann method (LBM) and discrete element method (DEM) capable of simulating fines migration in three dimensions. Fines migration occurs in a block cave mine, and is characterised by the faster movement of fine and often low-grade material towards the draw point in comparison to larger, blocky material.

Design/methodology/approach
– This study builds on the foundations and applications outlined in a companion paper, in which the non-Newtonian LBM-DEM framework is defined and applied in 2D simulations. Issues relevant to the extension to 3D, such as spatial discretisation, fluid boundary conditions and the definition of synthetic bulk material parameters using a power law model, are discussed.

Findings – The results of the 3D DEM percolation replication showed that migration is predominantly limited to within the draw zone, and that the use of a low-cohesion material model resulted in a greater amount of fines migration. The draw sensitivity investigation undertaken with the two bell partial block cave analysis did not show a significant difference in the amount of migration, despite the two draw strategies being deliberately chosen to result in isolated and interactive draw of material.

Originality/value – Along with the companion paper, this paper presents a novel application of the developed non-Newtonian LBM-DEM framework in the investigation of fines migration, which until now has been limited to scale models, cellular automata or pure DEM simulations. The results highlight the potential for this approach to be applied in an industrial context, and indicate a number of potential avenues for further research.
Keyword Mining
Soil mechanics
Simulation
Lattice Boltzmann method
Discrete element method
Block caving
Fines migration
Non-Newtonian fluids
Soil rheometry
Free-Surface Flow
Boundary-Conditions
Gas Automata
Equation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Non HERDC
 
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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 18 Jun 2013, 13:31:15 EST by Deanna Mahony on behalf of School of Mechanical and Mining Engineering