A computational approach for investigating and controlling the wake/blade-row interaction noise through the use of actuators or blowing/suction on the stator blade surfaces is presented in this paper. This approach includes a finite volume upwind scheme for solving the Euler
equations, solution-adaptive and dynamic mesh techniques, boundary
treatments and an active noise control algorithm. A two-dimensional section of a fan stage, which is composed of an upstream rotor and a downstream fan exit guide vane (FEGV), is investigated. By utilizing an existing rotor wake model, the flow-field structure is observed. Also, the acoustic fields of the FEGV are presented and analyzed. The computed angle and wavelength of propagating waves at 2 and 3 BPF (blade passing frequency) are compared well with the related solutions in the other work, so that the accuracy of present approach is confirmed. Finally, the dynamic mesh technique and a new active noise control algorithm to simultaneously reduce the noise at 2 and 3 BPF are introduced. From the computational results, the magnitude of unsteady pressure and circumferentially averaged sound pressure level at inlet and outlet planes of the FEGV are reduced by about 69-91 per cent and 10-21 dB, respectively. The downstream propagating acoustic waves are more difficult to control than the upstream propagating waves. Also, the suppression of noise due to actuators on the blade surfaces is more significant than that of blowing/suction.