On Numerical Beamforming for Acoustic Source Identification Based on Supercomputer Simulation Data

The method of numerical beamforming for processing space-time data obtained in supercomputer simulation of aeroacoustics problems is used to localize a distributed acoustic source formed by the interaction of turbulent flow and aircraft or its elements in flight mode and to determine its amplitude-frequency characteristics. Mathematically, the proposed method is based on solving the inverse problem of determining the right-hand side in the Helmholtz equation for sources of monopole and dipole types. Compared to its analogue intended to analyze experimental measurements, the new method has significant advantages and allows a generalization to correlated sources. The capabilities of the method are demonstrated by solving the problem of identifying an acoustic source generated by a straight aircraft wing with deployed high-lift devices in landing mode.