Vorticity in the turbulent flow above variously rough surfaces

0518112 - ÚT 2023 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Kellnerová, Radka - Jurčáková, Klára - Procházka, Pavel P. - Uruba, Václav
Vorticity in the turbulent flow above variously rough surfaces.
EPJ Web of Conferences. Paris: EDP Sciences, 2019, č. článku 02039. 213. E-ISSN 2100-014X.
[EFM18 - Experimental Fluid Mechanics 2018. Prague (CZ), 13.11.2018-16.11.2018]
Grant CEP: GA ČR(CZ) GA15-18964S
Institucionální podpora: RVO:61388998
Klíčová slova: wind tunnel * particle image velocimetry * proper orthogonal decomposition
Obor OECD: Mechanical engineering
https://www.epj-conferences.org/articles/epjconf/pdf/2019/18/epjconf_efm18_02039.pdf

Highly turbulent flows above variously rough surfaces were investigated by means of Time-Resolved Particle Image Velocimetry in a wind tunnel. Proper Orthogonal Decomposition was applied to both velocity and vorticity data in order to detect dominant features in the flow based on turbulent kinetic energy and enstrophy, respectively. While both the shape and location of the POD patterns exhibited similarity with other studies, a systematic inconsistency in terms of contribution from the features to the enstrophy between the previously published papers and our results were found.
Trvalý link: http://hdl.handle.net/11104/0304498