Table 1

Pump specifications and Reynolds number ranges: large-scale pump (pump A) and scaled-down model (pump B)

Parameter Pump A Pump B Units
Inlet diameter D1 150 30 mm
Outlet diameter D2 408.40 81.68 mm
Volute diameter D3 436 87.20 mm
Blade thickness e 8 1.60 mm
Volute base width b3 50 10 mm
Inlet blade angle β1 70 70 0
Outlet blade angle β2 63 63 0
Number of blades z 5 5
Nominal flow rate Qbep 590 7.50 m3/h
Nominal head Hbep 49 10.63 m
Rotational speed N 1470 3450 rpm
Reynolds number 1.5 107 2.4 106 rpm

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