Fig 1.
Axial flow pump model.
Fig 2.
Computational domain.
Fig 3.
Pulsating pressure sensor arrangement and cavitation experiment equipment.
Fig 4.
The Grids on the surface (Top row) and in tip clearance (Bottom row).
Table 1.
Key parameters of the grid and time step.
Table 2.
Numerical simulation and experiment data of H with different NPSH.
Table 3.
Calculation results of UI and UGT.
Table 4.
Results of |E| and UV.
Fig 5.
Comparison of H between simulation and experiment.
Fig 6.
Comparison of cavitation shape between numerical simulation (Left column) and experiment (Right column).
Fig 7.
Root mean square (RMS10) of the blade frequency component (first 10 orders only) at different axial positions.
Table 5.
Comparison of RMS10 in the tip clearance.
Fig 8.
First 10 blade frequency components of pulsating pressure in the tip clearance with different NPSH.
Fig 9.
Variation of RMS10 of tip clearance pulsating pressure with the intensification of cavitation.
Fig 10.
Distribution of pressure coefficient on three cross sections and blade surfaces.
Fig 11.
Pressure coefficient graph on cylindrical section at blade tip (expanding into plane).
Table 6.
Numerical simulation conditions of different scale pumps.
Fig 12.
Variation of RMS10 of the pulsating pressure at the monitoring point near the leading edge.