Numerical Research on Effects of Splitter Blades to the Influence of Pump as Turbine

Table 3

Amplitude of frequency domain and MPF at volute monitoring points (see Figures 7(a) and 7(b)).

Items	Frequency	1	2	3	4	5
Without splitter	50 Hz	2101.52	6497.02	2194.44	9119.44	1797.85
	100 Hz	425.34	491.59	911.75	1111.94	1051.60
	150 Hz	420.67	560.64	699.09	2390.07	987.26
	MPF	1.44	3.73	1.66	5.24	2.03
With splitter	50 Hz	956.43	1361.59	492.59	1379.13	190.40
	100 Hz	963.56	1160.57	1495.59	3628.93	1120.18
	150 Hz	400.03	498.83	870.31	984.72	1249.82
	MPF	1.02	1.55	1.25	3.09	1.48