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Oblique collisions of non-rotating spherical particles with a wall
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SYSNO ASEP 0393890 Document Type K - Proceedings Paper (Czech conf.) R&D Document Type Conference Paper Title Oblique collisions of non-rotating spherical particles with a wall Author(s) Chára, Zdeněk (UH-J) SAI, ORCID, RID
Vlasák, Pavel (UH-J) SAI, ORCID, RID
Kysela, Bohuš (UH-J) SAI, ORCID, RIDSource Title ENGINEERING MECHANICS 2013. - Praha : Insitute of Thermomechanics ASCR, v. v. i., 2013 / Zolotarev I. - ISSN 1805-8248 - ISBN 978-80-87012-46-8
S. 228-234Number of pages 7 s. Publication form Medium - C Action ENGINEERING MECHANICS 2013 /19./ Event date 13.05.2013-16.05.2013 VEvent location Svratka Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords wake ; particle trajectory ; velocity field Subject RIV BK - Fluid Dynamics R&D Projects GA103/09/1718 GA ČR - Czech Science Foundation (CSF) Institutional support UH-J - RVO:67985874 Annotation 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. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2014
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