Sparsification of BEM Matrices for Large-Scale Eddy Current Problems

Piergiorgio Alotto, Paolo Bettini, Ruben Specogna

Research output: Contribution to journalArticle

9 Citations (Scopus)


Integral formulations can be convenient for computing eddy currents in complicated electromagnetic systems. However, large-scale problems may quickly exceed the memory capacity even of very large machines, since the matrices are fully populated. We aim at illustrating how \mathcal {H} -matrices with adaptive cross approximation can provide an effective method to increase the size of the largest solvable problems by means of boundary element methods based on stream functions with modest implementation effort. The method is first validated on a benchmark problem for which an analytical solution is available and then applied to a complex problem of engineering interest related to the computation of the currents induced in the stabilizing shell of a nuclear fusion device.
Original languageEnglish
Article number7203204
Pages (from-to)-
JournalIEEE Transactions on Magnetics
Issue number3
Publication statusPublished - 1 Jul 2016
Externally publishedYes


All Science Journal Classification (ASJC) codes

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

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