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Lattice Boltzmann model for predicting the deposition of inertial particles transported by a turbulent flow

Fede, Pascal and Sofonea, Victor and Fournier, Richard and Blanco, Stéphane and Simonin, Olivier and Lepoutère, Guillaume and Ambruş, Victor Lattice Boltzmann model for predicting the deposition of inertial particles transported by a turbulent flow. (2015) International Journal of Multiphase Flow, 76. 187-197. ISSN 0301-9322

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Official URL: http://dx.doi.org/10.1016/j.ijmultiphaseflow.2015.07.004

Abstract

Deposition of inertial solid particles transported by turbulent flows is modelled in a framework of a statistical approach based on the particle velocity Probability Density Function (PDF). The particle-turbulence interaction term is closed in the kinetic equation by a model widely inspired from the famous BGK model of the kinetic theory of rarefied gases. A Gauss-Hermite Lattice Boltzmann model is used to solve the closed kinetic equation involving the turbulence effect. The Lattice Boltzmann model is used for the case of the deposition of inertial particles transported by a homogeneous isotropic turbulent flows. Even if the carrier phase is homogeneous and isotropic, the presence of the wall coupled with particle-turbulence interactions leads to inhomogeneous particle distribution and non-equilibrium particle fluctuating motion. Despite these complexities the predictions of the Lattice Boltzmann model are in very good accordance with random-walk simulations. More specifically the mean particle velocity, the r.m.s. particle velocity and the deposition rate are all well predicted by the proposed Lattice Boltzmann model.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at International Journal of Multiphase Flow website : http://www.sciencedirect.com/science/article/pii/S0301932215001548
HAL Id:hal-01321207
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Romanian Academy (ROMANIA)
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Funders:
Agence nationale de la recherche (France) - National Authority for Scientific Research - ANCS (Romania)
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Deposited On:25 May 2016 09:01

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