Three-Dimensional Numerical Analyses of the Stability of Ag/BSCCO Tape
Practical design considerations for HTS magnets require detailed magnetothermal analysis. Here we report investigations of the stability of high-T c superconducting tapes. As a result of the broad range of temperatures during a transition and the strong temperature dependence and anisotropy of the material properties, the finite element method (FEM) is used to solve the three-dimensional heat conduction equation. The heat source is determined using the operating current, the resistivity of the Ag and the critical current density of Bi2Sr2Ca2Cu3Ox (BSCCO). The minimum quench energy is determined for infinitely long uniform sources in the BSCCO.
KeywordsCritical Current Density Critical Power Strong Temperature Dependence Uniform Source National High Magnetic Field Laboratory
Unable to display preview. Download preview PDF.
- 2.A. Unal and M-C. Chyu, Three-dimensional stability analysis for quenching and recovery of superconductor tapes or films, International Symposium on Safety of Superconductors and Related Heat Transfer at Low Temperatures, August 28–31 (1994).Google Scholar
- 3.S.B. Kim, Y. Ueno and A. Ishiyama, Experiment and numerical analysis of normal zone propagation properties in Ag sheathed Bi-2223 superconducting tapes, submitted to IEEE Transactions on Magnetics and presented at the MT-14 conference.Google Scholar
- 6.E.E. Burkhardt and J. Schwartz, Two-Dimensional Finite Element Analysis of the Stability of Ag/BSCCO Tapes, Advances in Cryogenic Engineering 41, Cryogenic Engineering Conference, 545–552 (1996).Google Scholar
- 7.S.J. Collocott, R. Driver and C. Andrikidis, Specific heat of the ceramic superconductor Bi2Sr2CuO8 from 0.4 to 20 K, Physica C, 173:117–124 (1991).Google Scholar
- 11.R.W. Powell, C.Y. Ho and P.E. Liley, Journal of Physics and Chemistry, Ref. Data 3, Suppl. 1, Vol. 606(1974).Google Scholar