Multipoint and Multiobjective Optimization of a Centrifugal Compressor Impeller Based on Genetic Algorithm

Table 1

SRV2AB rotor design parameters.

Shaft speed	50000 rpm
Design mass flow rate	2.55 kg/s
Impeller tip radius	112 mm
Diffuser outlet radius	212.8 mm
Rotor tip speed	586 m/s
Rotor pressure ratio	6.2 : 1
Blade number full/splitter	13/13
LE hub radius	30 mm
LE tip radius	78 mm
Blade angle LE tip	26.5 deg (from tangential)
Blade angle TE	52 deg (from tangential)
Exit blade height	8.7 mm
Diffuser inclination against radial	13 deg
Tip clearance	0.5 mm at inlet to 0.3 mm at exit