Numerical evaluation of electromagnetic force induced in high {Tc} superconductor with grain boundary

Journal Article · Wed May 01 04:00:00 EDT 1996 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.497446· OSTI ID:260600

Hashizume, Hidetoshi; Toda, Saburo; Maeda, Koutaro ^[1]

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1. Tohoku Univ., Sendai (Japan). Dept. of Nuclear Engineering

After high {Tc} superconducting material was discovered, its superconducting characteristic has been improved so that its critical current density becomes comparable with that of metal alloy superconductors. Together with this progress of the high {Tc} material, it is considered to apply the materials to generating levitation force in combination with permanent magnets. In this case, it becomes very important to evaluate quantitatively the electromagnetic force for designing of the devices. Some researches have used numerical analysis to evaluate the force, where the grain boundary was ignored or treated as nonconducting. In the real materials, however, some part of the screening current can pass through the grain boundary. In this paper, therefore, two dimensional electromagnetic analysis was performed with a new method to treat the grain boundaries, and its effect on the levitation force was discussed.

• OSTI ID: 260600
• Report Number(s): CONF-9507112--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 3Pt1 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALCULATION METHODS
ELECTROMAGNETIC FIELDS
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
LEVITATION
NUMERICAL ANALYSIS
SUPERCONDUCTING DEVICES