3D acoustic scattering from an irregular fluid waveguide via the BEM

摘要: The BEM is used to calculate the variation in pressure field generated by a dilatational point load inside channel filled with homogeneous fluid, presence of an irregular floor. Green's functions are defined frequency domain and obtained superposing virtual acoustic sources combined so as generate boundary conditions free or rigid surfaces channel. responses time means Fourier transforms, making use complex frequencies. main features spectral representation signals scattered floors then described elucidate most important aspect wave acoustics, which can provide basis for development non-destructive testing imaging methods.