On The Use Of Isoparametric Elements For BEM
Modeling Of Arbitrarily Shaped Thin Wires In
Electromagnetic Compatibility Applications
Author(s)
D. Poljak, V. Doric & D. Cavka
Abstract
The paper deals with the frequency domain Galerkin-Bubnov scheme of the
Indirect Boundary Element Method (GB-IBEM) for the solution of the
Pocklington integral equations for arbitrary thin wire configurations. The
presence of a lossy media is taken into account by using both the reflection
coefficient approximation and the rigorous Sommerfeld integral formulation.
Some illustrative computational examples related to power line communication
systems (PLC) and grounding systems are presented.
Keywords: boundary elements, frequency domain modeling, Pocklington
equation, thin wires of arbitrary shape.
1 Introduction
The most rigorous approach to analyze the electromagnetic field coupling to
arbitrary configurations of overhead and buried wires, respectively, is related to
the use of the antenna theory (the full wave approach) [1, 2]. Such a formulation
is usually based on a corresponding set of the Pocklington integral equations
[3, 4]. If one deals with the frequency domain formulation the related transient
response is evaluated via the Inverse Fourier Transform (IFT). An important
feature of the integral equation approach is the use of isoparametric elements for
an efficient treatment of curved wires, which is not readily the case with a
transmission line approximation [4]. On the other hand, the most serious
drawback of the antenna theory is relatively long computational time required for
the analysis of complex structures [1, 2].
The excitation of aboveground and belowground wire configurations is of
particular interest in electromagnetic compatibility (EMC). The knowledge of
Keywords
boundary elements, frequency domain modeling, Pocklington
equation, thin wires of arbitrary shape.
Related Book
Other papers in this volume
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