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Modelling of supercritical turbulent flow over an inclined backward-facing step in a open channel
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SYSNO ASEP 0361278 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Modelling of supercritical turbulent flow over an inclined backward-facing step in a open channel Author(s) Příhoda, Jaromír (UT-L) RID, ORCID
Zubík, P. (CZ)
Šulc, J. (CZ)
Sedlář, M. (CZ)Number of authors 4 Source Title Engineering Mechanics 2011. - Prague : Institute of Thermomechanics AS CR, v. v. i., 2011 / Fuis V. - ISBN 978-80-87012-33-8 Pages s. 495-498 Number of pages 4 s. Action Engineering Mechanics 2011 /17./ Event date 09.05.2011-12.05.2011 VEvent location Svratka Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords open channel flow ; inclined backward-facing step ; supercritical flow Subject RIV BK - Fluid Dynamics R&D Projects GA103/09/0977 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000313492700117 Annotation The contribution deals with the experimental and numerical modelling of supercritical turbulent flow in an open channel with an inclined backward-facing step on its bottom. The step with the height 100 mm and 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 the commercial software ANSYS CFX 12.0. Numerical results obtained by the two-equation SST model and the EARSM model completed by transport equations for turbulent energy and specific dissipation rate were compared with experimental data. The modelling was concentrated particularly on the flow pattern near the step including the possible flow separation and the corresponding changes of free surface. The agreement of numerical results obtained by means of the EARSM model with experimental data is quite good. 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 2012
Number of the records: 1