Investigation on Broadening Compressor Surge Margin by Using Active Magnetic Bearing

Table 1

Geometrical parameters.

Impeller		Diffuser
(1) Number of blades	14	(7) Pinch out radius	112.125 mm
(2) Blade backswept angle	38.5°	(8) Constant height	10.37 mm
(3) Exit radius	97.5 mm	(9) Exit radius	170 mm
(4) Inlet hub radius	20.3 mm
(5) Inlet shroud radius	55 mm
(6) Exit blade height	11.52 mm