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Mesh Decomposition for Efficient Parallel Computing of Electrical Machines by Means of FEM Accounting for Motion

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6 Author(s)
Stefan Bohmer$^{1}$ Institute of Electrical Machines, , RWTH Aachen University,, Aachen,, Germany ; Enno Lange ; Martin Hafner ; Tim Cramer
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The relative motion between stator and rotor in electrical machines requires a flexible representation in 2-D and 3-D finite element (FE) models. Numerous approaches to incorporate the relative motion are available. Due to increasing problem size and accuracy, parallel computing becomes more desirable. The parallel simulation of sufficiently large problems often involves domain decomposition algorithms, especially if distributed memory systems are used for the parallelisation. Accounting for motion usually requires explicit domain decomposition at each simulation step. This paper proposes an approach avoiding the computationally expensive domain decomposition at each step by properly choosing an initial decomposition, which can be applied to all steps throughout the simulation.

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IEEE Transactions on Magnetics  (Volume:48 ,  Issue: 2 )