Optimal Design of a Centrifugal Compressor Impeller Using Evolutionary Algorithms

Table 5

Comparison of the design variables located on the Paretooptimal front.

Design variables	Initial	A	B	C
𝜙1, Ps3 [𝑟/𝑅2]	0.733	0.779	0.753	0.790
𝜙2, Ps4 [𝑧/𝑅2]	0.399	0.345	0.279	0.266
𝜙3, Ph3 [𝑟/𝑅2]	0.400	0.518	0.518	0.473
𝜙4, Ph4 [𝑧/𝑅2]	0.629	0.638	0.678	0.678
𝜙5, Pt3 [angle]	−30.022	−19.746	−20.548	−20.548
𝜙6, Pt5 [angle]	46.949	20.414	29.037	33.249
𝜙7, Pb3 [angle]	−39.754	−31.550	−33.556	−33.556
𝜙8, Pb6 [angle]	80.409	86.899	79.679	80.682