Oblique collisions of non-rotating spherical particles with a wall

0393890 - ÚH 2014 RIV CZ eng K - Conference Paper (Czech conference)
Chára, Zdeněk - Vlasák, Pavel - Kysela, Bohuš
Oblique collisions of non-rotating spherical particles with a wall.
ENGINEERING MECHANICS 2013. Praha: Insitute of Thermomechanics ASCR, v. v. i., 2013 - (Zolotarev, I.), s. 228-234. ISBN 978-80-87012-46-8. ISSN 1805-8248.
[ENGINEERING MECHANICS 2013 /19./. Svratka (CZ), 13.05.2013-16.05.2013]
R&D Projects: GA ČR GA103/09/1718
Institutional support: RVO:67985874
Keywords : wake * particle trajectory * velocity field
Subject RIV: BK - Fluid Dynamics

In the present paper non-rotating particle-wall collisions were experimentally investigated. By means of the PIV method a velocity field around falling spheres was analyzed. It was shown that the wake behind the particle which approached a bed in non-normal direction was asymmetrical and after the impact the wake passed the particle only along one side. This non-symmetrical velocity field resulted in additional forces which pushed the particle to an opposite direction than was the direction of the particle motion just after the impact.
Permanent Link: http://hdl.handle.net/11104/0222249