Optimal Design of a Centrifugal Compressor Impeller Using Evolutionary Algorithms

Table 1

Control points for the flow passage and design variables.

At the shroud			At the hub
Points	𝑧/𝑅2	𝑟/𝑅2	Points	𝑧/𝑅2	𝑟/𝑅2
Ps1	0.0	0.700	Ph1	0.0	0.300
Ps2	0.078	0.695	Ph2	0.223	0.350
Ps3	0.184	0.733(𝜙1)	Ph3	0.394	0.400(𝜙3)
Ps4	0.399(𝜙2)	0.587	Ph4	0.629(𝜙4)	0.581
Ps5	0.496	0.886	Ph5	0.632	0.801
Ps6	0.520	1.0	Ph6	0.650	1.0