A CFD Lagrangian Particle Model To Analyze
The Dust Dispersion Problem In Quarries Blasts
Author(s)
J. T. Alvarez, I. D. Alvarez, S. T. Lougedo & B. G. Hevia
Abstract
In the framework of the Research Project CTM2005-00187/TECNO, \“Prediction
models and prevention systems in the particle atmospheric contamination in an
industrial environment” of the Spanish National R+D Plan of the Ministry of
Education and Science, 2004-2007 period, a CFD model to simulate the
dispersion of the dust generated in blasts located in limestone quarries has been
developed. This is a complex phenomenon that is being studied through the use
of several digital video recordings of blasts and the dust concentration field data
measured by light scattering instruments, as well as the subsequent simulation of
the dispersion of the dust clouds using Multiphase Computational Fluid
Dynamics. After several tests with multiphase methods, both Eulerian and
Lagrangian, finally the latter was used due to its ease in implementing
calculations of discrete phases composed by multisized particles with affordable
memory requirements.
Keywords: Bench Blasting, dust dispersion modelling, CFD, Discrete
Lagrangian methods.
1 Introduction
This paper explains the simulations done to model the dust dispersion generated
in a production blast located in a medium sized limestone quarry, ranging around
1Mt/year, exploited through drill and blast method. Limestone is a key natural
resource, base of multiple materials used in Civil Works and main raw material
of the cement.
In order to achieve this production level there are needed at least two blasts
per week, blasts that generate several possible environmental risks as the aerial
Keywords
Bench Blasting, dust dispersion modelling, CFD, Discrete
Lagrangian methods.
Related Book
Other papers in this volume
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