Research Center for Engineering of
                Systems with Complex Fluids
Title: Experimental Investigations of the Vortex Rope into a Simplified Draft Tube and its Flow Control
Published In: ACTA Technica Napocencis, Series: Applied Mathematics and Mechanics, No. 52, vol. II, pp. 249 -257.
Description: Operating Francis turbines at partial discharge is often hindered by the development of the helical vortex (so-called vortex rope) downstream the runner, in the draft tube cone. The unsteady pressure field induced by the precessing vortex rope leading to pressure fluctuations. In this paper a simple and robust method to mitigate the vortex rope by using an axial water jet is evaluated. The vortex rope mitigation using jet control method is investigated experimentally on the test rig developed at the Politehnica University of Timisoara (UPT) – National Center for Engineering Systems with Complex Fluids (NCESCF).
ISBN: 
ISSN:ISSN 1221-5872
DOI: 
Publication year: 2009
Keywords: 
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Authors: BAYA Alexandru , BOSIOC Ilie Alin , MUNTEAN Sebastian , SUSAN-RESIGA Romeo ,
Type: National Journal Article
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Laboratory: Numerical Simulation and Parallel Computing Laboratory
Institution: UPT