Original title: On the 3D Dynamics of the Wake Behind a Circular Cylinder
Authors: Uruba, Václav ; Procházka, Pavel P. ; Skála, Vladislav
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2020, Praha (CZ), 20200219
Year: 2020
Language: eng
Abstract: Flow in the wake of a circular cylinder is studied experimentally using time-resolved stereo PIV method. Special attention is paid to 3D topology of dynamical structures. While the distribution of statistic quantities along the cylinder is uniform, and i.e. 2D, the instantaneous flow structure is fully 3D. Within the velocity fluctuating flow field the structures containing streamwise vorticity and velocity components are dominant. The POD modes connected with von Kármán vortex street are identified.
Keywords: 3D structure; circular cylinder; POD; wake
Project no.: GA17-01088S (CEP), GC19-02288J (CEP)
Funding provider: GA ČR, GA ČR
Host item entry: Topical Problems of Fluid Mechanics 2020, ISBN 978-80-87012-74-1, ISSN 2336-5781

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2020/31-TPFM2020.pdf
Original record: http://hdl.handle.net/11104/0313323

Permalink: http://www.nusl.cz/ntk/nusl-432164


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