Title:	POD Spectrum of the Wake behind a Circular Cylinder
Authors:	Uruba, Václav Procházka, Pavel
Citation:	URUBA, V., PROCHÁZKA, P. POD Spectrum of the Wake behind a Circular Cylinder. 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. 1-11. ISSN 2261-236X.
Issue Date:	2020
Publisher:	MATEC Web of Conferences
Document type:	konferenční příspěvek conferenceObject
URI:	http://hdl.handle.net/11025/42552
ISSN:	2261-236X
Keywords in different language:	POD;Spectrum;Wake;Circular Cylinder
Abstract in different language:	The wake dynamics behind a long circular cylinder in cross-flow was studied using the POD method. The temporal parts of POD modes, Chronoses, are subjected to frequency analysis. Five groups of modes are distinguished according to the frequency contents. The low order high energy modes contain the vortex shedding frequency or its harmonics up to 3rd order plus Kolmogorov spectrum. The higher order modes are characterized by combination of Kolmogorov spectrum with the white noise spectrum, its importance grows with the mode order. The very high order modes are characterised by the white noise spectrum only.
Rights:	© MATEC Web of Conferences
Appears in Collections:	Konferenční příspěvky / Conference papers (CEV) Konferenční příspěvky / Conference papers (KKE) OBD

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