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Dynamics of reattachment region behind backward-facing step in a narrow channel

SYSNO ASEP	0438140
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Dynamics of reattachment region behind backward-facing step in a narrow channel
Author(s)	Uruba, Václav (UT-L)_{RID, ORCID}
Number of authors	1
Source Title	Proceedings in Applied Mathematics and Mechanics - ISSN 1617-7061 Roč. 14, č. 1 (2014), s. 641-642
Number of pages	2 s.
Publication form	Online - E
Action	Annual Meeting of the International Association of Applied Mathematics and Mechanics /85./
Event date	10.03.2014-14.03.2014
VEvent location	Erlangen
Country	DE - Germany
Event type	WRD
Language	eng - English
Country	DE - Germany
Keywords	backward facing step ; reattachment ; channel flow
Subject RIV	BK - Fluid Dynamics
R&D Projects	GAP101/10/1230 GA ČR - Czech Science Foundation (CSF)
Institutional support	UT-L - RVO:61388998
DOI	10.1002/pamm.201410305
Annotation	Reattachment region in the channel flow behind backward-facing step is studied for various Reynolds numbers in the range 7-35 thousands (based on incoming flow velocity and step height). Results of experiments obtained using time resolved PIV method applied on the region close to the channel bottom indicating skin friction are to be presented. Dynamical features of the flow-field are studied in detail using Oscillation Pattern Decomposition method. Several types of low-frequency dynamical structures are shown in this region including spirals and nodes. Typical frequencies connected with this structures behavior are evaluated. Time mean picture of the skin friction distribution on the channel bottom is close to2D structure, while dynamical structure is fully 3D.
Workplace	Institute of Thermomechanics
Contact	Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
Year of Publishing	2015
Electronic address	http://onlinelibrary.wiley.com/doi/10.1002/pamm.201410305/abstract

Number of the records: 1