A Method For The Computation Of
Open-boundary Non-linear Transient
Magnetic Fields In Axisymmetry
Author(s)
G. Aiello, S. Alfonzetti, B. Azzerboni G. Borzi
and N. Salerno
Abstract
This paper describes an iterative finite element method to evaluate numerically
axisymmetric magnetic fields in a ferromagnetic material in the presence of
external time-varying current sources and in an open-boundary geometry. A
fictitious boundary delimiting a bounded domain is introduced. At each discrete
time, two algebraic systems are set up and solved for the predictor and corrector
solutions. Both these systems are solved iteratively by assuming a first guess for
the Dirichlet condition on the fictitious boundary and improving it by making use
of the free-space Green's function until convergence takes place. A great
reduction in computing time
Keywords
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