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Conference Paper

FEMALY: A Finite Element MAtlab LibrarY for Electromagnetics

Authors

Spitzer,  Klaus
30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations;

Blechta,  Jan
30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations;

Börner,  Jana
30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations;

Börner,  Ralph-Uwe
30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations;

Eiermann,  Michael
30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations;

Ernst,  Oliver
30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations;

Scheunert,  Mathias
30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations;

External Ressource
Fulltext (public)

EMTF_2023_St_Marienthal_05_Spitzer.pdf
(Publisher version), 212KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Spitzer, K., Blechta, J., Börner, J., Börner, R.-U., Eiermann, M., Ernst, O., Scheunert, M. (2024): FEMALY: A Finite Element MAtlab LibrarY for Electromagnetics. - In: Börner, J., Yogeshwar, P. (Eds.), - Protokoll über das 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung: St. Marienthal, 25. September - 29. September 2023, 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung (St. Marienthal 2023), 23-23, 1 p.


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026075
Abstract
We present a finite element software library written in Matlab for the numerical simulation and inversion of electromagnetic fields in two and three dimensions. It is designed in a modular way to easily plug together fundamental building blocks for various electromagnetic applications from DC to the inductive range in the frequency and even time domain. External modules comprise the mesh generator and the equation solver library. Through its homogeneous software concept the adoption to any field application is relatively simple and makes the code suitable to open source distribution. We introduce the key features of this library including higher-order Lagrange and Nédélec finite elements formulated on unstructured tetrahedral grids, a Gauss- Newton inversion approach using linear Raviart-Thomas elements for H1 regularization, and the ability to incorporate any geometric feature such as topography, bathymetry and internal voids like caves, tunnels and mine buildings. The library is currently being tested with large real data sets to confirm its usefulness as a tool for practical data interpretation. Therefore, case studies for the magnetotelluric, direct current resistivity, controlled source electromagnetic and induced polarization methods in the field and laboratory are briefly outlined as examples with challenging geometric features.