Technical Report 2011-016

Implementation of a Collocated Boundary Element Method for Acoustic Wave Propagation in Multilayered Fluid Media

Elena Sundkvist and Elisabeth Larsson

June 2011

Abstract:
The numerical solution of the Helmholtz equation with nonlocal radiation boundary conditions is considered. We model sound wave propagation in a multilayered piecewise homogeneous medium. A fourth-order accurate collocated, boundary element method is used, where the solution inside the domain is computed through a representation integral. The method is shown to have the expected fourth-order convergence and is also compared with a fourth-order accurate finite difference method.

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