3-D field analysis of a superconducting bulk magnet

Author

Hahn, Seung-Yong ; Kim, Ji Hoon ; Koh, Chang-Seop ; Hahn, Song-Yop

Author_Institution

Seoul Nat. Univ., South Korea

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

1996

Lastpage

1999

Abstract

Magnetic field can be trapped in a superconducting bulk by using the field cooling method. In this paper, trapped field was calculated by 3-D numerical analysis. The existing 1-D critical state model was expanded to 3-D. With this model and iteration method, the nonlinearity of J-E constitutive relation of a superconducting bulk was numerically modeled. The field cooling system with a hexahedral bulk and cylindrical magnet, which is impossible to be analyzed by 2-D or axisymmetric numerical analysis, was analyzed by the presented method. Being compared with experimental data, the validity of the presented method was verified. The finite element method was adopted for numerical calculation

Keywords

cooling; finite element analysis; iterative methods; magnetic fields; superconducting magnets; 1-D critical state model; 2-D numerical analysis; 3-D field analysis; 3-D numerical analysis; J-E constitutive relation nonlinearity; axisymmetric numerical analysis; cylindrical magnet; field cooling method; finite element method; hexahedral bulk; iteration method; magnetic field trapping; superconducting bulk magnet; Cooling; Current density; Current distribution; Magnetic analysis; Magnetic flux; Magnetic levitation; Numerical analysis; Superconducting magnetic energy storage; Superconducting magnets; Telephony;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920245

Filename

920245