Volute Optimization Based on Self-Adaption Kriging Surrogate Model

Table 3

Self-adaption Kriging surrogate model optimization algorithm.

Number	Volute radius Rd	Radius of tongue r	Outlet angle of the volute θ
1	254	15.6	7.5
2	244	13.2	0.5
3	248	11.6	1.5
4	240	10.8	5.5
5	236	14	2.5
6	252	10	3.5
7	246	9.2	8.5
8	250	12.4	4.5
9	242	8.4	6.5
10	238	14.8	9.5