Boundary conditions and use of symmetries in electromagnetic waveguide sparse matrix finite element method problems

A general approach to impose homogeneous boundary conditions on algebraic systems deriving from variational formulations of differential problems is presented. The proposed approach proves to be effective and its performances are particularly enhanced when sparse matrices are dealt with. It applies to bi- and tri-dimensional cases and turns out to be independent of the physical nature of the problem. Examples of the algorithm application are reported concerning the finite element analysis of electromagnetic waveguides. Copyright © 2000 John Wiley & Sons, Ltd.

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