Experimental and numerical the effect of cavitation detection on hydraulic performance of the centrifugal pump based on different geometrical configurations

The cavitation phenomena and its experimental evaluation of hydraulic pump performance are the subjects of this study. Both qualitative and quantitative assessments of a pump's flow structure were carried out. The unsteady flow in a pump with various impeller geometry characteristics was investigated numerically. In-depth examinations of the local flow parameters for the static pressure, pump head, vapour volume variation fraction, and pressure fluctuations in the time and frequency domains were conducted. The findings showed that the low-pressure region that closed the impeller eye close to the leading edge of the blade is where the cavitation phenomena takes place. Additionally, the results showed that the blade passing frequency (BPF) and the pump's rotational frequency (RF) are two significant dominant frequencies in the device. Furthermore, the numerical results show that modest cavitation occurred at the design mass flow for Z=3, 4, 5, 6, and 7 impeller blades.