Simulation of particle saltation using the lattice Boltzmann method

0447376 - ÚH 2016 RIV NL eng C - Conference Paper (international conference)
Dolanský, Jindřich - Chára, Zdeněk - Vlasák, Pavel - Kysela, Bohuš
Simulation of particle saltation using the lattice Boltzmann method.
17th International Conference on Transport and Sedimentation of Solid Particles. Delft: Delft University of Technology, 2015. ISBN 978-83-927084-8-3. ISSN 0867-7964.
[17th International Conference on Transport and Sedimentation of Solid Particles. Delft (NL), 22.09.2015-25.09.2015]
R&D Projects: GA ČR GA15-18870S
Institutional support: RVO:67985874
Keywords : lattice Boltzmann method * entropic LBM * particle-laden turbulent flow * particle-fluid interaction * PIV
Subject RIV: BK - Fluid Dynamics

The two-dimensional numerical model of the motion of spherical particles in a conduit
with rough bed based on the lattice Boltzmann method (LBM) is presented. The bed of the conduit
is formed by stationary spherical particles of the same size as the moving particles. Moving
particles generally pass through different stages of motion such as rolling, saltation or suspension.
Translational and rotational movements of the particle are induced by gravitational and
hydrodynamic forces. The lattice Boltzmann method (LBM) based simulation was developed to
study particle saltation motion, particle-bed and particle-particle collisions, and mutual interactions
of the carrier liquid flow and the particles. The simulation enabled modelling both the particle
motion and the fluid flow. The trajectories of the particles determined within the LBM simulation
were validated against experimental data. The accuracy of the applied approach and stability and
efficiency of the simulation were assessed.
Permanent Link: http://hdl.handle.net/11104/0257479