We consider two-dimensional interior wave propagation problems with vanishing initial and mixed boundary conditions, reformulated as a system of two boundary integral equations with retarded potential. These latter are then set in a weak form, based on a natural energy identity satisfied by the solution of the differential problem, and discretized by the related energetic Galerkin boundary element method. Numerical results are presented and discussed. © 2009 Elsevier B.V. All rights reserved.
Aimi, A., Diligenti, M., & Guardasoni, C. (2011). On the energetic Galerkin boundary element method applied to interior wave propagation problems. Journal of Computational and Applied Mathematics, 235(7), 1746–1754. https://doi.org/10.1016/j.cam.2010.02.011