Development of Complex Electromagnetic Problems Using FDTD Subgridding in Hybrid Computational Techniques

Name: Development of Complex Electromagnetic Problems Using FDTD Subgridding in Hybrid Computational Techniques
Brand: Nova Science Publishers Inc
SKU: 9781611220131
Price: 1428.04 RON
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Autor: R A Abd-Alhameed

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Editura: Nova Science Publishers Inc

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Complex electromagnetic problems using new hybridised computational techniques combining the frequen...

Informații despre carte

Autor

R A Abd-Alhameed

Limbă

engleză

Legare

Carte - Copertă tare

Publicat

2014

Pagini

186

EAN

9781611220131

ISBN

9781611220131

Enbook ID

06428112

Editura

Nova Science Publishers Inc

Greutate

582

Dimensiuni

153 x 230 x 21

Descriere completă

Complex electromagnetic problems using new hybridised computational techniques combining the frequency domain Method of Moments (MoM), Finite-Difference Time-Domain (FDTD) and a subgridded Finite-Difference Time-Domain (SGFDTD) method are studied and discussed in detail. The techniques are desirable to predict electromagnetic absorption in inhomogeneous, anisotropic and lossy dielectric materials irradiated by geometrically intricate sources. In Method of Moments modelling, the surface kernel solution is derived for 1-D, 2-D and 3-D. The electric surface patch integral formulation is solved by independent linear basis function methods in the circumferential and axial directions of the antenna wires. A similar orthogonal basis function is used on the end surface and appropriate attachments with the wire surface are employed to satisfy the requirements of current continuity. The surface current distributions on structures which may include closely spaced parallel wires are investigated and analysed. The results are found to be stable and showed good agreement with less comprehensive earlier work by others. Moreover, Galerkin technique is employed to predict the effect of a chiral bianisotropic substrate of a rectangular microstrip resonator in the spectral domain. The work also investigates the interaction between overhead high voltage transmission lines and underground utility pipelines using the FDTD technique for the whole structure, combined with a subgridding method at points of interest. The induced fields above the pipeline are computed. The Perfectly Matched Layer (PML) concept has been utilized to circumvent open-region geometries. The establishment of edge elements has greatly improved the performance of this method and the computational burden due to huge numbers of time steps, in the order of tens of millions, has been eased to tens of thousands by employing quasi-static methods.

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Development of Complex Electromagnetic Problems Using FDTD Subgridding in Hybrid Computational Techniques

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