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

Table 2

Factor level table.

Level	Factor
	A	B	C	D	E	F	G	H	I	J
1	122	8	10	6	2	88	34	5	0	15
2	124	9	15	7	3	89	36	10	5	20
3	126	10	20	8	4	90	38	15	10	25

A—d _2min/mm, B—b ₂/mm, C—𝛽₂/(°), D—z, E—S ₂/mm, F—𝛼₂/(°), G—d ₁/mm, H—Δ𝛽₁/(°), I—𝛾₃/(°), J—𝛽₃/(°).