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dc.contributor.authorUruba, Václav
dc.contributor.authorProcházka, Pavel
dc.date.accessioned2021-01-25T11:00:26Z-
dc.date.available2021-01-25T11:00:26Z-
dc.date.issued2020
dc.identifier.citationURUBA, V., PROCHÁZKA, P. Dynamics of the Tip Vortices in the Wake Behind a Circular Cylinder of Finite Length. In: XXII. International Scientific Conference – The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2020 (AEaNMiFMaE-2020). Les Ulis: MATEC Web of Conferences, 2020. s. 1-10. ISSN 2261-236X.cs
dc.identifier.issn2261-236X
dc.identifier.urihttp://hdl.handle.net/11025/42550
dc.format10 s.
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherMATEC Web of Conferencesen
dc.relation.ispartofseriesXXII. International Scientific Conference – The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2020 (AEaNMiFMaE-2020)en
dc.rights© MATEC Web of Conferencesen
dc.titleDynamics of the Tip Vortices in the Wake Behind a Circular Cylinder of Finite Lengthen
dc.typekonferenční příspěvekcs
dc.typeconferenceObjecten
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedThe dynamics of the tip vortices in the wake behind a wall-mounted finite-length circular cylinder of the aspect ratio 2 was studied experimentally using time resolved stereo PIV technique. The cylinder was mounted normal to a ground plane and it was subjected to a cross-flow with thin boundary layer developed on the wall, the Reynolds number based on inflow velocity and cylinder diameter was 9.7 thousands. The dynamics of tip vortices were analysed using the POD method applied to the plane perpendicular to the flow close to the cylinder. Besides the decaying power spectrum, slower that the Kolmogorov-type one, the two distinct frequencies were detected on Strouhal numbers 0.09 and 0.15. These frequencies could be linked to the vortical structures dynamics in the wake. The frequency Sh = 0.15 corresponds to predominantly spanwise vortices dynamics with anti-symmetrical patterns with respect to the cylinder axis, while the frequency Sh = 0.09 corresponds to mainly streamwise vortical structures dynamics with symmetrical patterns respectively. Thus, the von Kármán vortex street was detected on Strouhal frequency 0.15.en
dc.subject.translatedDynamicsen
dc.subject.translatedTipen
dc.subject.translatedVorticesen
dc.subject.translatedWakeen
dc.subject.translatedCircular Cylinderen
dc.subject.translatedFinite Lengthen
dc.identifier.doi10.1051/matecconf/202032805008
dc.type.statusPeer-revieweden
dc.identifier.obd43931357
dc.project.IDSGS-2019-021/Zvyšování účinnosti, spolehlivosti a životnosti energetických strojů a zařízení 5cs
dc.project.IDLQ1603/R4S - SUSENcs
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Konferenční příspěvky / Conference papers (KKE)
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