Validation of two-point predictive model of jet near the wing low-frequency noise amplification

With close proximity of the jet engine and the wing of the aircraft intense noise may occur at low and medium frequencies associated with the interaction of the jet and the trailing edge of the wing. To conduct estimates of the contribution of this effect to aircraft community noise levels at the early stages of design, it is necessary to use reliable predictive models. In this paper, a modification of the previously developed analytical model of interaction noise is proposed and validated, which is based on the idea of scattering of turbulent jet near field linear hydrodynamic pulsations at the trailing edge of the wing. To validate the model, numerical simulation of jet noise near a rectangular plate simulating an airplane wing was performed using the LES method. It is shown that the modified model, which has a simple set of input parameters, makes it possible to predict with reasonable accuracy the main characteristics of the jet-wing interaction noise, including in the presence of a concurrent flow characteristic of an airplane take-off and landing.