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PIER PIER B PIER C PIER M PIER Letters
2012-06-02
Specific Absorption Rate Computations with a Nodal-Based Finite Element Formulation
By
Ruben Otin,

    Dr. Ruben Otin

    Electromagnetism

    CIMNE-International Center for Numerical Methods in Engineering

    Spain

    Homepage

Herve Gromat

    Dr. Herve Gromat

    CASSIDIAN

    MetaPole ZAC La Clef Saint-Pierre

    France

    Homepage

Progress In Electromagnetics Research, Vol. 128, 399-418, 2012
doi:10.2528/PIER12041105
Abstract
The aim of this work is to asses the performance of a nodal-based finite element formulation when applied to the computation of specific absorption rate (SAR) problems. This formulation solves numerically the regularized Maxwell equations using nodal elements and, in principle, it offers several advantages: It provides spurious-free solutions and well-conditioned matrices without the need of Lagrange multipliers or scalar potentials. Its integral representation is well-suited for hybridization with integral numerical techniques because of a low-order singular kernel. Also, the nodal approximation of the electromagnetic problem is easier to couple to a thermal finite element problem which usually also employs nodal elements. But, on the other hand, we need to take special care of the points of the domain where the field is singular to obtain accurate solutions. In this paper, we show the impact of the singularities on the performance of the proposed finite element formulation and how its good features are affected when solving real-life SAR problems.1
Citation
Ruben Otin, and Herve Gromat, "Specific Absorption Rate Computations with a Nodal-Based Finite Element Formulation," Progress In Electromagnetics Research, Vol. 128, 399-418, 2012.
doi:10.2528/PIER12041105
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