Pekeris波导中轴对称结构辐射声场预报的联合波叠加法OA

This study proposes a method for predicting the acoustic radiation of underwater axisymmetric structures under a Pekeris waveguide.The proposed method comprehensively utilizes an integral form of the mirror virtual source method and the principle of superposition to quickly calculate the acoustic radiation of near-field and far-field volume targets simultane-ously.Following the principle of superposition,the target-induced sound field is modeled as the superposition of radiation sound fields produced by its internal equivalent sound source.The mirror virtual source method is employed to establish the relationship between the sound source intensity and the surface vibration velocity of the structure,enabling determination of the sound source intensity.Furthermore,a new mirror method was derived using the Green function in integral form to con-struct an accurate sound transfer function that captures both amplitude and phase.Therefore,the results of each equivalent sound source calculation were substituted into the sound propagation function constructed by the integral-form virtual source method and linearly stacked to obtain the sound field radiated by the target.Considering axisymmetric structures,pulsating spherical sources,and oscillating spherical sources as examples,the sound power was calculated using the proposed method and subsequently compared with results from COMSOL finite element calculations,demonstrating the high computational ac-curacy of the proposed method.