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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