Experimental Research and Numerical Analysis of Flow Phenomena in Discharge Object with Siphon

0536227 - ÚT 2021 RIV CH eng J - Článek v odborném periodiku
Sedlář, M. - Procházka, Pavel P. - Komárek, M. - Uruba, Václav - Skála, Vladislav
Experimental Research and Numerical Analysis of Flow Phenomena in Discharge Object with Siphon.
Water. Roč. 12, č. 12 (2020), č. článku 3330. E-ISSN 2073-4441
Grant CEP: GA MPO(CZ) FV30104
Institucionální podpora: RVO:61388998
Klíčová slova: siphon * free-surface flow * PIV * CFD analysis * SAS * flow structures
Obor OECD: Applied mechanics
Impakt faktor: 3.103, rok: 2020
Způsob publikování: Open access
https://res.mdpi.com/d_attachment/water/water-12-03330/article_deploy/water-12-03330-v2.pdf

This article presents results of the experimental research and numerical simulations of the flow in a pumping system’s discharge object with the welded siphon. The laboratory simplified model was used in the study. Two stationary flow regimes characterized by different volume flow rates and water level heights have been chosen. The study concentrates mainly on the regions below and behind the siphon outlet. The mathematical modelling using advanced turbulence models has been performed. The free-surface flow has been carried out by means of the volume-of-fluid method. The experimental results obtained by the particle image velocimetry method have been used for the mathematical model validation. The evolution and interactions of main flow structures are analyzed using visualizations and the spectral analysis. The presented results show a good agreement of the measured and calculated complex flow topology and give a deep insight into the flow structures below and behind the siphon outlet. The presented methodology and results can increase the applicability and reliability of the numerical tools used for the design of the pump and turbine stations and their optimization with respect to the efficiency, lifetime and environmental demands. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Trvalý link: http://hdl.handle.net/11104/0315820