Original title: Modelling of subcritical free-surface flow over an inclined backward-facing step in a water channel
Authors: Příhoda, Jaromír ; Zubík, P. ; Šulc, J. ; Sedlář, M.
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2010, Liberec (CZ), 2010-11-24 / 2010-11-26
Year: 2010
Language: eng
Abstract: The contribution deals with the experimental and numerical modelling of subcritical turbulent flow in an open channel with an inclined backward-facing step. The step with the inclination angle 20 deg was placed in the water channel of the cross-section 200x200 mm. Experiments were carried out by means of the PIV and LDA measuring techniques. Numerical simulations were executed by means of the commercial software ANSYS CFX 12.0. Numerical results obtained for two-equation models and EARSM turbulence model completed by transport equations for turbulent energy and specific dissipation rate were compared with experimental data. The modelling was concentrated particularly on the development of the flow separation and on the corresponding changes of free surface.
Keywords: backward-facing inclined step; flow separation; free-surface flow
Project no.: CEZ:AV0Z20760514 (CEP), GA103/09/0977 (CEP)
Funding provider: GA ČR
Host item entry: International Conference Experimental Fluid Mechanics 2010, ISBN 978-80-7372-670-6

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0190889

Permalink: http://www.nusl.cz/ntk/nusl-42090


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers