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Performance Comparison Between FEM and DG with Application in Electromagnetics
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Scientific Computing.
2016 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Military aircraft have strict requirements to show a low radar signature within different aspect angels and frequency bands. The Finite Difference method and Finite Element method are used by Saab to determine the radar signature from different objects, but the methods  suffer from a few limitations. In this master thesis, the Discontinuous Galerkin Finite Element method is implemented to compute the radar signature. The method is implemented in Matlab and is used to discretize Maxwell's Equations in one dimension. The implementation includes dispersive media and absorbing boundary conditions. Performance comparisons between the Finite Element method and the Discontinuous Galerkin Finite Element method are carried out. The results show that the Finite Element method perform better in one dimension, however the results also suggests that the Discontinuous Galerkin Finite Element method will perform better in higher dimensions.

Place, publisher, year, edition, pages
2016. , 51 p.
UPTEC F, ISSN 1401-5757 ; 16054
Keyword [en]
National Category
Other Computer and Information Science
URN: urn:nbn:se:uu:diva-304270OAI: diva2:1014961
External cooperation
Educational program
Master Programme in Engineering Physics
Available from: 2016-10-05 Created: 2016-10-03 Last updated: 2016-10-05Bibliographically approved

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