Table 2 Orthogonal test table.

From: Optimization design of hump phenomenon of low specific speed centrifugal pump based on CFD and orthogonal test

Serial numbers

Combinations

Corresponding parameters

\(D_{2} /{\text{mm}}\)

\(b_{2} /{\text{mm}}\)

\(Z\)

\(\beta_{2} /^\circ\)

1

\(A_{1} B_{1} C_{1} D_{1}\)

290

13

5

24

2

\(A_{1} B_{2} C_{2} D_{2}\)

290

11

6

26

3

\(A_{1} B_{3} C_{3} D_{3}\)

290

9

7

22

4

\(A_{2} B_{1} C_{2} D_{3}\)

295

13

6

22

5

\(A_{2} B_{2} C_{3} D_{1}\)

295

11

7

24

6

\(A_{2} B_{3} C_{1} D_{2}\)

295

9

5

26

7

\(A_{3} B_{1} C_{3} D_{2}\)

300

13

7

26

8

\(A_{3} B_{2} C_{1} D_{3}\)

300

11

5

22

9

\(A_{3} B_{3} C_{2} D_{1}\)

300

9

6

24