Simple Absorbing Boundary Conditions for the convected Helmholtz equation

Nathan Rouxelin

In this poster we introduce a technique to construct Absorbing Boundary Conditions (ABCs) for the convected Helmholtz equation from ABCs formerly derived for the standard Helmholtz equation. Those ABCs are both efficient and easy to implement. This approach to construct ABCs is validated in the case of a uniform flow for which an analytic solution is available. An illustrative case with a non-uniform potential flow is also provided.