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Cal ulation of eddy urrents with edge elements on non mat hing grids

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Cal ulation of eddy urrents with edge elements on non-mat hing grids in moving stru tures F. Rapetti, F. Bouillault, L. Santandrea, A. Bua, Y. Maday, A. Razek (IEEE Fellow) Abstra t|In this paper we present a non- onforming non-overlapping domain de omposition method to approximate the eddy urrent problem, formulated in terms of the ele tri eld variable, in non-stationary stru tures. This approximation, that allows for non-mat hing grids at the sliding interfa e, is based on the mortar element method ombined with edge elements in spa e and nite dieren es in time. Numeri al results illustrate how the method works and the in uen e of the free part movement on the ele tri eld distribution. Index Terms|eddy urrents, edge element approx- imation on non-mat hing grids, ele tri eld as pri- mary variable, moving stru tures. I. Introdu tion T HE omputation of the spa e and time distribution of indu ed urrents in ele tromagneti systems is of great importan e for performan e predi tions and devi es design. One important aspe t to be taken into a ount is the presen e of moving stru tures.

  • dimensional eddy

  • ele tromagneti

  • rotor

  • tri eld

  • transmission ondition

  • mesh edges

  • stator

  • omputed steady-state ele

  • method

  • numeri al


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Language English
stator
n
τ
τ
Γ
1
2
x
y
z
Γ
Γ
rotor
rotor