DocumentCode :
1543089
Title :
A 2-D Robust FE-FV Mixed Method to Handle Strong Nonlinearities in Superconductors
Author :
Kameni, Abelin ; Mezani, Smail ; Sirois, Frédéric ; Netter, Denis ; Lévêque, Jean ; Douine, Bruno
Author_Institution :
Fac. des Sci., GREEN-INPL, Univ. Henri Poincare, Vandoeuvre-lès-Nancy, France
Volume :
46
Issue :
8
fYear :
2010
Firstpage :
3445
Lastpage :
3448
Abstract :
A robust numerical method based on 2-D mixed finite-elements-finite volumes (FE-FV) allows the solution of diffusion problems in superconducting (SC) materials. The proposed approach handles the strong nonlinearity of the E(J) constitutive power law of high-temperature superconductors (HTS). The method is tested for a SC cylinder submitted to a sinusoidal transport current or to a transverse sinusoidal external field. The current density distributions as well as the AC losses are computed. Comparisons to a FE analyses that use the magnetic field as state variable show the validity of the proposed approach. It can be seen that the proposed method is very stable even for large n-values for which the FE method does not converge.
Keywords :
critical current density (superconductivity); diffusion; finite element analysis; finite volume methods; high-temperature superconductors; shapes (structures); statistical distributions; 2D robust FE-FV mixed method; E(J) constitutive power law; current density distributions; diffusion problems; finite-elements-finite volume method; high-temperature superconductors; n-values; robust numerical method; strong nonlinearities; superconducting materials; Current density; Distributed computing; Finite element methods; High temperature superconductors; Iron; Magnetic analysis; Robustness; Superconducting materials; Superconductivity; Testing; Finite elements; finite volumes; superconducting materials;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2010.2044025
Filename :
5512909
Link To Document :
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