Multiobjective Optimization of Low-Specific-Speed Multistage Pumps by Using Matrix Analysis and CFD Method

Table 6

Efficiency at design flow contrast of different stages (%).

Stage	1st efficiency	2nd efficiency	3rd efficiency	4th efficiency	Total efficiency
1	59.25				58.38
2	59.34	61.77			60.78
3	59.47	61.73	61.79		60.81
4	59.41	61.82	61.93	61.87	60.85