EAN: 9783031005749

SYNTHESIS LECTURES ON COMPUTATIONAL ELECTROMAGN...

In this work  an iterative approach using the finite difference frequency domain method is
presented to solve the problem of scattering from large-scale electromagnetic structures. The
idea of the proposed iterative approach is to divide one computational domain into smaller
subregions and solve each subregion separately. Then the subregion solutions are combined
iteratively to obtain a solution for the complete domain. As a result  a considerable reduction
in the computation time and memory is achieved. This procedure is referred to as the iterative
multiregion (IMR) technique. Different enhancement procedures are investigated and introduced
toward the construction of this technique. These procedures are the following: 1) a hybrid
technique combining the IMR technique and a method of moment technique is found to be efficient
in producing accurate results with a remarkable computer memory saving  2) the IMR technique is
implemented on a parallel platform that led to a tremendous computational time saving  3)
together  the multigrid technique and the incomplete lower and upper preconditioner are used
with the IMR technique to speed up the convergence rate of the final solution  which reduces
the total computational time. Thus  the proposed iterative technique  in conjunction with the
enhancement procedures  introduces a novel approach to solving large open-boundary
electromagnetic problems including unconnected objects in an efficient and robust way.
Contents: Basics of the FDFD Method   IMR Technique for Large-Scale Electromagnetic Scattering
Problems: 3D Case   IMR Technique for Large-Scale Electromagnetic Scattering Problems: 2D Case
The IMR Algorithm Using a Hybrid FDFD and Method of Moments Technique   Parallelization of the
Iterative Multiregion Technique   Combined Multigrid Technique and IMR Algorithm   Concluding
Remarks   Appendices

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