Research Article
Pressure Pulsations of the Blade Region in S-Shaped Shaft-Extension Tubular Pumping System
Table 2
Frequency analysis of pressure pulsation of P17~P20.
| Flowrate coefficient | Spectral parameter | P17 | P18 | P19 | P20 | F1 | F2 | F1 | F2 | F1 | F2 | F1 | F2 |
| 0.368 | f/Hz | 13.59 | 72.50 | 13.59 | 72.50 | 13.59 | 72.50 | 13.59 | 72.50 | | 0.0195 | 0.0083 | 0.261 | 0.0055 | 0.0260 | 0.0060 | 0.0176 | 0.0080 | 0.460 | f/Hz | 72.50 | 66.46 | 66.46 | 72.50 | 72.50 | 12.08 | 72.50 | 12.08 | | 0.0039 | 0.0033 | 0.0038 | 0.0026 | 0.0039 | 0.0034 | 0.0039 | 0.0034 | 0.552 | f/Hz | 72.50 | 8.53 | 72.50 | 8.53 | 4.26 | 72.50 | 4.26 | 72.50 | | 0.0034 | 0.0024 | 0.0039 | 0.0030 | 0.0032 | 0.0023 | 0.0033 | 0.0027 |
|
|