The unsteady 3-D flow fields in a transonic compressor at design point were simulated numerically to study the effect of the bowed and swept rotors on rotor wake fluctuation intensity and transportation progress.The results show that

as compared to the baseline

all three types of bowed or swept rotors weaken the fluctuation intensity of tip leakage vortex and the top fluctuation core of wake at rotor outlet

thus quickening the dissipation during downstream transportation and helping to reduce the unsteady disturbance on the top of stator.The fluctuation intensity of the middle part of swept or bowed rotor wake increases to some extent

and the middle-part low energy fluid of rotor wake intends to move downwards during transportation

so the stator is disturbed stronger at mid-span and near hub.