Lattice Boltzmann method used to simulate particle motion in a conduit

0467027 - ÚH 2018 RIV SK eng J - Článek v odborném periodiku
Dolanský, Jindřich - Chára, Zdeněk - Vlasák, Pavel - Kysela, Bohuš
Lattice Boltzmann method used to simulate particle motion in a conduit.
Journal of Hydrology and Hydromechanics. Roč. 65, č. 2 (2017), s. 105-113. ISSN 0042-790X. E-ISSN 1338-4333
Grant CEP: GA ČR GA15-18870S
Institucionální podpora: RVO:67985874
Klíčová slova: Lattice Boltzmann method * particle motion * particle–fluid interaction * PIV * particle tracking
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 1.714, rok: 2017

A three-dimensional numerical simulation of particle motion in a pipe with a rough bed is presented. The simulation based on the Lattice Boltzmann Method (LBM) employs the hybrid diffuse bounce-back approach to model moving boundaries. The bed of the pipe is formed by stationary spherical particles of the same size as the moving particles. Particle movements are induced by gravitational and hydrodynamic forces. To evaluate the hydrodynamic forces, the Momentum Exchange Algorithm is used. The LBM unified computational frame makes it possible to simulate both the particle motion and the fluid flow and to study mutual interactions of the carrier liquid flow and particles and the particle-bed and particle-particle collisions. The trajectories of simulated and experimental particles are compared. The Particle Tracking method is used to track particle motion. The correctness of the applied approach is assessed.
Trvalý link: http://hdl.handle.net/11104/0271372