Title :
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
fDate :
3/1/2001 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
