An example of fatigue failure of a Francis turbine under the action of edge vortices descending from the discharge edges of the blades is given. Recommendations are outlined for exposure and elimination of the source of high-frequency loads in the turbine.
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Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 10, October 2013, pp. 43 – 48.
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Ivanchenko, I.P., Prokopenko, A.N. Role of Edge Vortices in Impeller Failure of Francis Hydraulic Turbines. Power Technol Eng 47, 430–435 (2014). https://doi.org/10.1007/s10749-014-0464-3
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DOI: https://doi.org/10.1007/s10749-014-0464-3