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 stator surface static pressure fluctuation.The results show that

all three types of bowed or swept rotors

especially the bowed-swept rotor

could weaken the static pressure fluctuation on the top and bottom of stator leading edge compared with the baseline.As a result

the stator surface pressure fluctuation near leading edge area becomes more uniform in radial direction.Expect for the stator leading edge area

the amplitude of pressure fluctuation decreases on the top of pressure and suction surface downstream the bowed and swept rotors

but the effect at mid-span and hub is insignificant.