Abstract
AbstractThis paper describes a new formulation to solve the acoustic scattering problem by a non‐convex structure. The presented hybrid algorithms connect the on‐surface radiation condition method to accelerate the calculations with a two‐dimensional finite element method to treat the non‐convex part of the domain. This allows the problem of truncating the computational domain to be overcome. The variational formulations associated with a Dirichlet or a Neumann boundary condition are considered. Finally, we give some numerical results on a model test case to illustrate the improvement of accuracy of the new algorithm compared to a pure OSRC approach. Copyright © 2002 John Wiley & Sons, Ltd.
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