Comparative Study on Steady and Unsteady Flow in a Centrifugal Compressor Stage

Table 2

Comparison of numerical setup between the RANS and URANS simulations.

Setting	RANS (Kim et al. [17])	URANS (current work)
Turbulence model	Standard turbulence model with scalable wall function
Advection scheme	High-resolution advection scheme
Turbulence	First-order upwind scheme
Rotor-stator interface	Mixing-plane interface	Sliding interface
Transient scheme	—	Second-order backward Euler