WIT Press


A Method For The Computation Of Open-boundary Non-linear Transient Magnetic Fields In Axisymmetry

Price

Free (open access)

Paper DOI

10.2495/ES990121

Volume

22

Pages

10

Published

1999

Size

812 kb

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