IEEE Access | |
A Novel h–φ Approach for Solving Eddy–Current Problems in Multiply Connected Regions | |
Jasmin Smajic1  Federico Moro2  Lorenzo Codecasa3  | |
[1] degli Studi di Padova, Padova, Italy;Dipartimento di Ingegneria Industriale, Universit&x00E0;Institute of Electromagnetic Fields, Swiss Federal Institute of Technology (ETH Z&x00FC; | |
关键词: Eddy currents; finite element method; cell method; multiply connected; cut; | |
DOI : 10.1109/ACCESS.2020.3025291 | |
来源: DOAJ |
【 摘 要 】
A novel h-φ approach for solving 3-D time-harmonic eddy current problems is presented. It makes it possible to limit the number of degrees of freedom required for the discretization such as the T-Ω method, while overcoming topological issues related to it when multiply connected domains are considered. Global basis functions, needed for representing magnetic field in the insulating region, are obtained by a fast iterative solver. The computation of thick cuts by high-complexity computational topology tools, typically required by the T-Ω method, is thus avoided. The final matrix system turns out to be symmetric and full-rank unlike the more classical A-A method, which requires gauging of magnetic vector potential to ensure uniqueness. Numerical tests show that the proposed method is accurate and the field problem solution is obtained in a reasonable computational time even for 3-D models with millions of mesh elements.
【 授权许可】
Unknown