Calculation of eddy currents in moving structures by a sliding mesh finite element method

Calculation of eddy currents in moving structures by a sliding mesh-nite element method A. Bua , Y.Maday , F. Rapetti ASCI - UPR 9029 CNRS, Paris Sud University, Building 506, 91403 Orsay cedex, France LGEP - UMR 8507 CNRS, Supelec University Plateau de Moulon, 91192 Gif-Sur-Yvette cedex, France Abstract { In this paper we present some theoreti- cal and numerical results concerning the simulation of eddy currents in non-stationary structures. Both 2D and 3D models are considered. The approximation is based on the sliding-mesh mortar method combined with node elements in 2D and edge elements in 3D. An implicit Euler scheme is used to discretize in time. Key words { eddy currents, nite element approxima- tion on non-matching grids, magnetic eld as primary variable, moving structures. I. Introduction The subject of our research activity is the analysis and development of simulation tools to eectively predict the induced current distribution in non-stationary geometries with sliding interfaces. We then study the ux of eddy currents in a domain composed of two rigid conductive parts, a rotating one (rotor) in sliding contact with a xed one (stator). Our system is a sample of induction motor.

• edge elements


• both


• dimensional eddy


• constraint


• lagrangian variables


• current density


• conforming domain


• method