Research on Three-Dimensional Unsteady Turbulent Flow in Multistage Centrifugal Pump and Performance Prediction Based on CFD

Table 2

Performance data under off-design conditions of simulation.

Flow (m^3/h)	0.5𝑄	0.7𝑄	0.8𝑄	0.9𝑄	𝑄	1.1𝑄	1.2𝑄	1.3𝑄	1.5𝑄
Lift (m)	10.57	9.89	9.57	9.34	8.73	8.05	7.48	6.38	5.29
Shaft power (w)	546.3	617.9	634.7	666.5	686.4	711.7	763.3	760.7	856
Efficiency (%)	52.7	61.2	65.9	68.7	69.3	67.7	64	59.4	50.5