Modeling of high frequency coupling inside oversized structures by asymptotic and PWB methods

This paper proposes an original numerical strategy in order to assess high frequency coupling in large systems, typically for HIRF applications, in a frequency range in which classical full waves numerical schemes such as FDTD or MoM become tedious and sometimes inappropriate to use. This strategy is based on a logical topological decomposition of the electromagnetic (EM) problem as sub elementary problems which are solved one at a time. An example of application of the whole numerical strategy carried out in the context of the HIRF-SE European project is shown. The test-case is a scale model of an aircraft body; the successive modelling steps applied onto this example are detailed and illustrated in this paper.