Abstract Perfectly Matched Layers (PMLs) appear as a popular alternative to non-reflecting
boundary conditions for wave-type problems. The core idea is to extend the computational …

Abstract We construct Absorbing Boundary Conditions (ABCs) for the convected Helmholtz
equation that are easy to implement in a Hybridizable Discontinuous Galerkin (HDG) …

Wind tunnels are usually used to investigate the flows and forces associated with
underwater vehicles when free-surface effects can be ignored. However, because of the …

Low-cost airlines have significantly increased air transport, thus an increase in aviation
noise. Therefore, predicting aircraft noise is an important component for designing an aircraft …

An integral formulation for acoustic radiation in moving flows is presented. It is based on a
potential formulation for acoustic radiation on weakly non-uniform subsonic mean flows. This …

It is well-known that the convective wave equation with a uniform mean flow can be
transformed into a standard wave equation without flow by a Prandtl-Glauert-Lorentz type …

A fast multipole boundary element method (FMBEM) in a subsonic uniform flow is presented.
It is based on the boundary integral equation (BIE) in a subsonic uniform flow. The …

A surface homogenization method for acoustic waves over thin microstructured surfaces in
the presence of a fluid in a potential flow is presented. Sound hard surfaces are considered …

Theoretical modeling of sound propagation within lined ducts can help with interpreting the
underlying mechanisms of waveguide physics. Herein, we present ESM-FLOW, a meshless …

Generalized plane waves (GPWs) were introduced to take advantage of Trefftz methods for
problems modeled by variable coefficient equations. Despite the fact that GPWs do not …