NUMERICAL MODELING OF SCATTERING PROBLEMS USING A TIME-DOMAIN FINITE-VOLUME METHOD

This paper describes the application of a finite volume method in the time domain, for studying the scattering of a ''complex'' object. The principle of the finite volume scheme is explained. A finite volume co de allows a conformal meshing and composite materials can be considere d with no particular problem. Different comparisons are made with othe r numerical methods, in order to validate the introduction of imperfec tly conducting materials in our model, and the possibility of applying a dielectric constant to some parts of the computational space. A thi n-wire formalism has been introduced in the code and the results are c ompared with those of other numerical codes. The experiment simulated by the code is described, and the experimental and numerical results a re compared.