Název: Wake Behind a Cylinder: An Overview of Spatio-Temporal Aspects
Autoři: Uruba, Václav
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Conference Engineering mechanics 2022, Milovy (CZ), 20220509
Rok: 2022
Jazyk: eng
Abstrakt: A circular cylinder in crossflow is subjected to the overview study from the point of view spatial and temporal characteristics. It represents itself a typical engineering problem, appearing in practice frequently in various forms. In fluid mechanics, this case is considered to be a typical canonical case, with relatively simple and straightforward definition, but complex and dynamical flow topology. The typical dynamics is characterized by quasi-periodic behavior called von Kármán – Bénard vortex street with a typical frequency expressed in dimensionless number called Strouhal number. The wake flow structure is considered to be characterized by a single frequency and 2D topology, homogeneous along the cylinder axis, very often. The presented paper concentrates on differences between this commonly accepted model and physical reality. Both temporal and spatial aspects of the flow in the wake behind a cylinder are to be addressed. The turbulent subcritical wake characterized by Reynolds number about 5 thousand will be considered, as this situation is a typical case in mechanical engineering applications.
Klíčová slova: 3D structure; circular cylinder; dynamics; vortex; wake
Zdrojový dokument: Engineering mechanics 2022. Book of full texts, ISBN 978-80-86246-48-2, ISSN 1805-8248

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: https://www.engmech.cz/improc/2022/007.pdf
Původní záznam: https://hdl.handle.net/11104/0351473

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-541532


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference