Velocity Field in a Vicinity of Cylinder Bouncing off Horizontal Wall

0447387 - ÚH 2017 RIV US eng C - Conference Paper (international conference)
Chára, Zdeněk - Kysela, Bohuš - Dolanský, Jindřich
Velocity Field in a Vicinity of Cylinder Bouncing off Horizontal Wall.
International Conference of Numerical Analysis and Applied Mathematics 2015 (ICNAAM 2015). New York: AIP Publishing, 2016 - (Simos, T.; Tsitouras, C.), č. článku 030028. AIP Conference Proceedings, 1738. ISBN 978-0-7354-1392-4. ISSN 0094-243X.
[13th International Conference on Numerical Analysis and Applied Mathematics. Rhodes (GR), 23.09.2015-29.09.2015]
R&D Projects: GA ČR GA15-18870S
Institutional support: RVO:67985874
Keywords : cylinder impact * PIV measurement * LES simulation * Fluid agitation
Subject RIV: BK - Fluid Dynamics
http://aip.scitation.org/doi/pdf/10.1063/1.4951784

The paper describes experimental and numerical investigations of velocity fields around a circular cylinder colliding perpendicularly with a plane wall. The cylinder of the diameter D = 20 mm was moving vertically in a water tank and the motion was recorded by a fast digital camera. Reynolds numbers ranged from 3000 to 8100 and the initial positions L of the cylinder above the wall were L/D = 2.5; 3.5; 4.5 and 5.5. An evolution of fluid agitation in an area close to the impact point was based on the results of the velocity field measurements. The numerical simulations were performed using a 2D-LES model.
Permanent Link: http://hdl.handle.net/11104/0267165