Drag coefficient of spherical particles in turbulent channel flow

0483793 - ÚH 2018 RIV GR eng C - Konferenční příspěvek (zahraniční konf.)
Chára, Zdeněk - Dolanský, Jindřich - Kysela, Bohuš
Drag coefficient of spherical particles in turbulent channel flow.
Proceedings of the VII international conference on coupled problems in science and engineering. Spain: International Center for Numerical Methods in Engineering (CIMNE), 2017 - (Papadrakakis, M.; Onate, E.; Schrefler, B.), s. 594-603. ISBN 978-84-946909-2-1.
[International Conference on Computational Methods for Coupled Problems in Science and Engineering - Coupled Problems 2017 /7./. Rhodes Island (GR), 12.06.2017-14.06.2017]
Grant CEP: GA ČR GA15-18870S
Institucionální podpora: RVO:67985874
Klíčová slova: drag coefficient * CFD * Lattice Boltzmann method * finite volume method
Obor OECD: Fluids and plasma physics (including surface physics)
http://congress.cimne.com/coupled2017/frontal/Doc/Ebook2017.pdf

The paper presents results of numerical calculations of drag coefficients of large spherical solid particles. Several hydraulic cases were tested. The first one - the spheres were fixed at different heights above a rough bed of an open channel, the second one - the spheres moved along the channel bed and the third one - the sphere impacted and rebounded from a smooth surface. Finite Volume and Lattice Boltzmann methods were used for the simulations. The Particle Image Velocimetry (2D-PIV) was used to determine the velocity field in the open channel.
Trvalý link: http://hdl.handle.net/11104/0278981