Research Article
On the Rotor Stator Interaction Effects of Low Specific Speed Francis Turbines
Table 2
Uncertainty budget for RSI first and second harmonic amplitudes, BEP F99.
| Sensor | 1Hz Repeatability [kPa] | Amplitude RMS of first harmonic RSI [kPa] | Relative Uncertainty [%] | Amplitude RMS of second harmonic RSI [kPa] | Relative Uncertainty [%] |
| S1 | 0.002 | 0.404 | 0.50 | 0.028 | 7.2 | S2 | 0.005 | 0.462 | 1.1 | 0.018 | 28 | S3 | 0.002 | 1.218 | 0.16 | 0.064 | 3.1 | S4 | 0.002 | 1.118 | 0.18 | 0.098 | 2.0 |
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