https://doi.org/10.1051/epjconf/20146702120
Dynamics of secondary flow behind backward-facing step in a narrow channel
Institute of Thermomechanics, ASCR, v.v.i., Dolejskova 5, Praha 8, Czech Republic
a Corresponding author: uruba@it.cas.cz
Published online: 25 March 2014
Dynamics of the flow-field behind a backward-facing step in a narrow channel is studied experimentally using time resolved PIV technique. Secondary flow represented by vortical structures is studied using Oscillation Pattern decomposition technique. The low-frequency quasi-periodical structures appearing in the region just behind the step close to the channel bottom are studied. Typical dynamics of vortex structures involving contra-rotating vortex pair train, vortices coalescence and splitting have been observed.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
