Large-scale simulations of acoustic-structure interaction using the fast multipole BEM - Plenary lecture presented at the 76th Annual GAMM Conference, Luxembourg, 29 March 1 April 2005

摘要

For the simulation of acoustic-structure interaction problems, the coupled field equations must be solved. The structure is commonly discretized using finite elements, whereas for the acoustic field the boundary element method (BEM) is favorable. A mortar BEM-FEM coupling algorithm is developed that allows the combination of non-conforming meshes. The high flexibility for the choice of discretizations offers a high efficiency, since specialized shape functions and adaptive mesh refinement can be used in the subdomains. The mortar coupling algorithm yields a saddle point problem that is solved using a preconditioned inexact Uzawa algorithm. The iterative solver enables the use of the fast multipole BEM and thus coupled simulations on large boundary element models. (c) 2006 WILEYNCH Verlag GmbH & Co. KGaA, Weinheim.