Gj. Hendricks et al., ANALYSIS OF INSTABILITY INCEPTION IN HIGH-SPEED MULTISTAGE AXIAL-FLOWCOMPRESSORS, Journal of turbomachinery, 119(4), 1997, pp. 714-722
A nonlinear, two-dimensional, compressible dynamic model has been deve
loped to study rotating stall/surge inception and development in high-
speed, multistage, axial flow compressors. The flow dynamics are repre
sented by the unsteady Euler equations, solved in each interblade row
gap and inlet and exit ducts as two-dimensional domains, and in each b
lade passage as a one-dimensional domain. The resulting equations are
solved on a computational grid. The boundary conditions between domain
s are represented by ideal turning coupled with empirical loss and dev
iation correlations. Results are presented comparing model simulations
to instability inception data of an eleven stage, high-pressure-ratio
compressor operating at both part and full power, and the results ana
lyzed in the context of a linear modal analysis.