Citation:
Panagiota Pantazopoulou and Dimitris Drikakis. Computational modelling of acoustic scattering of a sound source in the vicinity
of the ground. Engineering Letters, 17:4, pp219-226
Abstract:
The paper presents a computational model for acoustic scattering of a near-the-
ground sound source around a body moving in a uniform flow. Using the method of
images and the concept of reflection coefficient, the half space Green's
function in a uniform flow is derived in the framework of the boundary element
method (BEM). The method is validated against analytical solutions and is
further applied in the case of acoustic scattering around an airfoil moving in
the vicinity of the ground both for rigid and soft ground conditions. The
results show the importance of ground impedance in the attenuation of sound.