The Transmission-line Matrix (TLM) method: An efficient tool for problem segmentation (diakoptics)

The paper describes a numerical procedure, called diakoptics, that allows one to solve for sub-domains of a large structure in a rigorous manner. Hence, one can optimize such a sub-domain during subsequent simulations without meshing the whole structure. In addition, the technique is naturally well suited for Transmission-Line Matrix (TLM) computations. Although diakoptics is very demanding in terms of computer cost for three-dimensional (3D) cases, various accelerating procedure can substantially reduce the memory and CPU time requirement. Some of these techniques are briefly described and discussed. Finally, examples of applications will be presented at the conference.