Numerical Study of Leakage and Rotordynamic Performance of Staggered Labyrinth Seals Working with Supercritical Carbon Dioxide

Table 3

Calculation conditions.

Parameters	Values
Fluid	S–CO2
Turbulence model	k-ε
Wall properties	Adiabatic, smooth surface
Temperature T (K)	737
Time step/s	1/500Ωi
Whirling frequency Ωi (Hz)	20, 40, …, 240, 260
Supply pressure Pin (MPa)	5.7
Discharge pressure Pout (MPa)	5.2
Rotational speed ω (RPM)	3600
Whirling orbit	Circle orbit
Vibration amplitude	6%δ2