Saltation movement of large spherical particles

0466641 - ÚH 2018 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Chára, Zdeněk - Dolanský, Jindřich - Kysela, Bohuš
Saltation movement of large spherical particles.
Proceedings of the International Conference of Numerical Analysis and Applied Mathematics (ICNAAM 2016). Melville, NY: AIP Publishing, 2017 - (Simos, T.; Tsitouras, C.), 030038-1-030038-4, č. článku 030038. AIP Conference Proceedings, 1863. ISBN 978-0-7354-1538-6. ISSN 0094-243X.
[14-th International Conference of Numerical Analysis and Applied Mathematics. Rhodes (GR), 19.09.2016-25.09.2016]
Grant CEP: GA ČR GA16-20175S
Institucionální podpora: RVO:67985874
Klíčová slova: saltation * channel flow * PIV * LBM
Obor OECD: Fluids and plasma physics (including surface physics)

The paper presents experimental and numerical investigations of the saltation motion of a large spherical particle in an open channel. The channel bottom was roughed by one layer of glass rods of diameter 6 mm. The plastic spheres of diameter 25.7 mm and density 1160 kgm(-3) were fed into the water channel and theirs positions were viewed by a digital camera. Two light sheets were placed above and under the channel, so the flow was simultaneously lighted from the top and the bottom. Only particles centers of which moved through the light sheets were recorded. Using a 2D PIV method the trajectories of the spheres and the velocity maps of the channel flow were analyzed. The Lattice-Boldzmann Method (LBM) was used to simulate the particle motion.
Trvalý link: http://hdl.handle.net/11104/0276268