Flap side-edge noise: acoustic analysis of Sen's model

The two-dimensional flap side-edge flow model developed by R. Sen is examined to determine the noise-production capability of the suggested mechanism. The model assumes that a vortex will be created at the equilibrium position off the side edge of the flap. The vortex is then perturbed away from the equilibrium position by incoming turbulence, causing it to oscillate and to emit sound. The noise field is computed three-dimensionally by considering the flap to have a finite chord.