Experimental Investigation of Pressure Fluctuation, Vibration, and Noise in a Multistage Pump

Table 1

Main structural parameters.

Main geometric parameters	Value
Inlet diameter of inlet section /mm	100
Impeller outer diameter /mm	314
The number of first-stage impeller blades	6
The outlet width of first-stage impeller /mm	20.5
The number of second-stage impeller blades	7
The outlet width of second-stage impeller /mm	20.5
Inlet diameter of guide vane /mm	316
Outer diameter of guide vane /mm	409
Blade number of positive guide vane	9
Blade number of negative guide vane	10
Outlet diameter of outlet section /mm	80