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Flat Free Runner With Outer Ring for Reducing the Hydraulic Instabilities Developed in the Discharge Cone of a Francis Turbine

Author(s): A I Bosioc; A Stuparu; C Tanasa; R F Susan-Resiga

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Abstract: When hydraulic turbines like Francis ones are not operating at their peak efficiency, they can experience a phenomenon called the vortex rope, which originates from the slower swirling flow from the diffuser. This occurrence often leads to high-pressure pulsations in the conical diffuser, posing a significant challenge to the stable and safe functioning of hydraulic turbines. To address this issue, this paper presents a practical solution: the

DOI: https://doi.org/10.1088/1755-1315/1483/1/012034

Year: 2023

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