Title: Reynolds Number Effect on Velocity Field and on Coherent Structures behind a Cylinder
Authors: Procházka, Pavel
Uruba, Václav
Citation: PROCHÁZKA, P., URUBA, V. Reynolds Number Effect on Velocity Field and on Coherent Structures behind a Cylinder. In: 38th Meeting of Departments of Fluid Mechanics and Thermodynamics. MELVILLE, NY 11747-4501: AIP Conf. Proc., 2019. s. 1-4. ISBN 978-0-7354-1858-5 , ISSN 0094-243X.
Issue Date: 2019
Publisher: AIP Conf. Proc.
Document type: konferenční příspěvek
URI: 2-s2.0-85068400227
ISBN: 978-0-7354-1858-5
ISSN: 0094-243X
Keywords in different language: : turbulence, decomposition, POD, OPD, wake, circular cylinder
Abstract in different language: The Particle Image Velocimetry was used to investigate the coherent structures behind a cylinder under moderate Reynolds number. Dynamical decomposition method was used to detect flow patterns having similar frequency as the vortex shedding frequency which is given by Strouhal number. The flow field has two-dimensional nature only for time-averaged flow. The instantaneous snapshots are fully 3-D. The wake is full of spanwise as well as streamwise oriented vortical structures causing periodical changing in the pressure field.
Rights: Plný text je přístupný v rámci univerzity přihlášeným uživatelům.
© AIP Conf. Proc.
Appears in Collections:Konferenční příspěvky / Conference papers (CEV)
Konferenční příspěvky / Conference papers (KKE)

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