Up to now a boundary element method based on the collocation method was combined with the Fast Multipole Method to speed up the numerical calculation.


This approach was chosen, because the collocation is a fast method to build up the matrix and the Fast Multipole Method (FMM)is a fast method to solve large matrices. For compatibility with the software HAMS the FMM has to be ported to a Galerkin based Boundary Element (BE) approach.