Finite-element modeling of three-dimensional electromagnetic fields in inhomogeneous media
Article first published online: 7 DEC 2012
Copyright 1991 by the American Geophysical Union.
Volume 26, Issue 1, pages 275–280, January-February 1991
How to Cite
1991), Finite-element modeling of three-dimensional electromagnetic fields in inhomogeneous media, Radio Sci., 26(1), 275–280, doi:10.1029/90RS00932.(
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 17 APR 1990
- Manuscript Received: 26 DEC 1989
An efficient and accurate finite-element method is presented for computing three-dimensional time-harmonic electromagnetic fields in strongly inhomogeneous, (an)isotropic media such as are encountered in the human body, subsurface structures of the Earth, and many engineering applications. For this purpose, two types of elements are used. In the domain of computation the corresponding program decides locally what type of element has to be used for obtaining the user-specified accuracy of modeling the field. In this way, optimum results are obtained both as regards computational efficiency and as regards desired accuracy. A method is introduced for imposing the divergence condition in a weighted sense. Numerical results are presented that demonstrate our approach to be efficient as well as accurate.