抄録
Discrete frequency noise (DFN) induced by rotor-stator interaction has been investigated experimentally. Pressure and velocity fluctuations in the stator passage were also measured to evaluate the correlation with the DFN. Pressure fluctuations on the surface of stator vane do not occur simultaneously in the same phase angle. The pressure fluctuations at leading edge area occur separately from another area. Cross correlation between the DFN and the pressure fluctuations is large, especially Nz and 2Nz. It is concluded from these results that the DFN is dominated by the pressure fluctuations on the pressure side near leading edge.
