"Energetic BEM-FEM coupling for the numerical solution of wave propagation problems in
unbounded multi-domains"
Abstract:
The talk will be focused on the numerical solution of wave propagation problems defined in unbounded multi-domains. The approximation is operated by a suitable coupling of boundary and finite element methods, directly written in space-time domain, used as local discretization techniques and both considered in an energetic framework. Fundamentals which allow the adopted boundary integral reformulation of the differential wave propagation problem will be shortly recalled; some details on quadrature schemes developed for the numerical evaluation of matrix elements in the linear system of the final time-marching procedure will be explained; emphasis will be given to the stability analysis of the proposed energetic approach. At last, several numerical results on wave propagation model problems will be presented and discussed.