Francis cavitation tests with nuclei injection : a new test procedure

Experimental studies have shown that outlet cavitation of a Francis turbine is influenced by the active nuclei content of the test loop water, up to a limit curve called the saturation characteristic. To determine the importance of this influence in operating conditions, tests are performed for a nu= 0.38 Francis mode!, for many operating points. Moreover, based on the resolution of the Rayleigh-Plesset equation, it can be shown that, even with a low nuclei content of the plant water, the cavitation characteristic of the full-scale machine should correspond to the saturation curve determined on the model. To verify the condition on this minimum amount of nuclei, in-situ measurements are performed.


Published in:
Proceedings of the16th Symposium of the IAHR, section on hydraulic machinery and cavitation : Large and medium size hydraulic machinery and installations from planning to operation, Sao Paolo, Brésil, 14th to 18th September, 2, 647-657
Presented at:
16th IAHR Symposium, Section on hydraulic machinery and cavitation : Large and medium size hydraulic machinery and installations from planning to operation, Sao Paolo, Brazil, September 14-18,1992
Year:
1992
Publisher:
International Association For Hydraulic Research
Note:
Using Smart Source Parsing 3
Laboratories:




 Record created 2005-11-04, last modified 2018-08-14

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