Original title: Dynamics of Recirculation Region Behind Backward-Facing Step
Authors: Uruba, Václav
Document type: Papers
Conference/Event: Colloquium FLUID DYNAMICS 2014, Praha (CZ), 2014-10-22 / 2014-10-24
Year: 2014
Language: eng
Abstract: Dynamics of the flow-field behind a backward-facing step in a narrow channel is studied experimentally using time-resolved PIV technique. Instability of the free shear layer of Kelvin-Helmholtz type is studied using simple averaging and Oscillation Pattern Decomposition (OPD) methods. Mean picture suggests existence of the classical recirculation zone. The OPD method reveals the structure of the instability consisting of a system of traveling vortical structures.
Keywords: backward-facing step; dynamics; kelvin-helmholtz instability
Project no.: GAP101/10/1230 (CEP)
Funding provider: GA ČR
Host item entry: Colloquium FLUID DYNAMICS 2014 , ISBN 978-80-87012-53-6

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0241479

Permalink: http://www.nusl.cz/ntk/nusl-178239


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers