Experimental Tests And Computational Fluid
Dynamics (CFD) Simulations Of Barriers
Installed Around Open Storage Piles Of
Raw Materials
Author(s)
I. Diego, J. Toraño, S. Torno & B. García
Abstract
The international commerce of raw materials is growing every year at a high
rate. Hugh amounts of granular materials are moved around the world and thus
increase the need of storage space. Usually the stockage yards where the
materials lay are installed in an open air, so the potential to create dust emissions
due to wind blows is high, then generating operative and environmental
problems. In order to quantify these emissions a series of scaled experiments to
simulate air flows and dust emission around conical shaped piles of granulated
materials stored in open areas have been developed. These experiments are then
used to validate CFD models of the phenomena. In a first phase the experiments
gave the possibility to effectively measure the flow patterns and the dust
emission around conical material piles. A Lagrangian Multiphase model was
implemented in CFD commercial code Ansys CFX 10.0, that successfully
simulated the emission of dust as compared to experimental data. In the second
phase, to be shown in this paper, metallic barriers are installed surrounding the
piles, and flow characteristics and dust emission are measured through the use of
hot-wire anemometers and light scattering instruments as well as simulated in the
CFD package. The paper shows how k-epsilon turbulence models are accurate
enough to simulate the air flow in affordable mesh resolutions and computing
times. The superficial velocity contours over the cone face are also studied in
order to obtain the degree of dust emission diminishing expected due to the
barrier installation. These studies have been done 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.
Keywords: storage piles, wind tunnel, CFD Lagrangian methods, turbulence.
Keywords
storage piles, wind tunnel, CFD Lagrangian methods, turbulence.
Related Book
Other papers in this volume
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