DIFFRACTION OF AN ACOUSTIC WAVE BY A PLATE IN A UNIFORM FLOW: A NUMERICAL APPROACH

@article{Job2005DIFFRACTIONOA,
title={DIFFRACTION OF AN ACOUSTIC WAVE BY A PLATE IN A UNIFORM FLOW: A NUMERICAL APPROACH},
author={S. Job and E. Lun{\'e}ville and J. Mercier},
journal={Journal of Computational Acoustics},
year={2005},
volume={13},
pages={689-709}
}

We study the diffraction in time harmonic regime of an acoustic wave by a rigid plate in the presence of a uniform flow in a duct. Contrary to prior analytical studies, using Wiener-Hopf techniques and thus restricted to semi-infinite plates, we use a, finite elements method which allows us to deal with plates of finite length. To take into account irrotational perturbations induced by the trailing edge of the plate, a potential formulation requires the introduction of a vortex sheet behind the… Expand