Validation of the Axial Thrust Estimation Method for Radial Turbomachines

Table 2

Parameters of the studied centrifugal compressor at the point of maximum axial thrust (point 9) used in the method proposed by Nguyen-Schäfer.

Pressure at the impeller inlet		94.5 kPa
Temperature at the impeller inlet		297 K
Pressure at the compressor outlet		231.2 kPa
Impeller inlet hub diameter		40.5 mm
Impeller inlet shroud diameter		134.9 mm
Impeller outlet diameter		270.9 mm
Shaft diameter		32.0 mm
Specific enthalpy increase, impeller		116.4 kJ/kg
Specific enthalpy increase, stage		150.7 kJ/kg
Ratio of specific heats		1.4
Specific gas constant		287 J/kg K
Mass flow rate		1.57 kg/s