Sliding Non-Conforming Interfaces for Edge Elements in Eddy Current Problems

Klaus Roppert*, Stefan Schoder, Gebhard Wallinger, Manfred Kaltenbacher

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In this work, a flexible discretization technique for the approximate solution of electromagnetic field problems with rotating parts, based on non-conforming (NC) interfaces of Nitsche-type, is investigated. This approach enables the use of edge elements of the first and second kind for the discretization of the magnetic vector potential without posing severe restrictions on gaps and overlaps of elements on both sides of the rotating interface. It improves the computational efficiency, compared to other NC interface formulations because no additional unknowns are introduced, and edge elements of different polynomial order can be coupled with this approach. The applicability is shown in two numerical examples, involving a cylindrical NC interface between a stationary and a rotating domain.

Original languageEnglish
Article number9312633
Pages (from-to)1-6
Number of pages6
JournalIEEE Transactions on Magnetics
Issue number3
Publication statusPublished - 1 Mar 2021


  • eddy current problem
  • Eddy currents
  • Faces
  • Finite element analysis
  • Magnetic domains
  • Magnetostatics
  • Nédélec elements
  • Nitsche method
  • non-conforming interface
  • Oscillators
  • Transient analysis
  • non-conforming (NC) interface
  • Nédélec elements
  • Eddy current problem

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Fields of Expertise

  • Information, Communication & Computing


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