Numerical Investigation of Pressure Fluctuation Characteristics in a Centrifugal Pump with Variable Axial Clearance

Table 3

Comparison of numerical results with experiment results of the pump performance.

	Efficiency			Head
	Experiment; (%)	Simulation; (%)	Error; (%)
M1	82.8	83.0	0.24	11.45	11.36	−0.79
M2	81.0	82.6	1.98	11.30	11.33	0.44
M3	78.3	81.8	4.47	10.88	11.23	3.22
M4	78.3	86.7	10.73	10.88	10.34	−4.96

Error = |simulation result − experiment result|/(experiment result) 100%.