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Effects of numerical formulation on magnetic field computation using meshless methods

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3 Author(s)
Kok-Meng Lee ; George W. Woodruff Sch. of Mech. Eng., Georgia Inst. of Technol., Atlanta, GA ; Qiang Li ; Sun, H.

Meshless methods have some advantages over their counterparts such as the finite-element method (FEM). However, existing meshless methods for computational electromagnetic fields are still not as efficient as FEM. In this paper, we compare two meshless methods of discretizing the computational domain of Poisson-like problems; namely, the point collocation and Galerkin methods (which use the strong and weak forms of the governing equation respectively), and their effects on the computational accuracy and efficiency of the magnetic fields. We also discuss methods of handling discontinuities at the material interface. We present several examples, which also provide a means to validate and evaluate both meshless methods. Exact solutions and/or FEM are used as a basis for comparison. In addition, we also verify the results by comparing computed magnetic forces against those measured experimentally

Published in:

Magnetics, IEEE Transactions on  (Volume:42 ,  Issue: 9 )