TY - JOUR
T1 - Stability analysis for a composite superconductor subjected to a linear thermal disturbance
AU - Seol, S. Y.
AU - Chyu, M. C.
PY - 1994
Y1 - 1994
N2 - The operational stability of a composite tape/film-type superconductor is studied by considering the impact of a thermal disturbance distributed along a line. Issues addressed are failure of intrinsic stability, current sharing, Joule heating, and recovery of superconductivity. Mathematical models have been developed to describe the phenomena. The conjugate heat diffusion problem for the superconductor and the stabilizer has been solved by the finite-difference method. The effects of current density and stabilizer dimension have been investigated, resulting in the identification of three modes with regard to the operational stability of the superconductor: intrinsically stable, recoverably unstable, and irrecoverably unstable. Numerical data of instability parameter, convective cooling rate, Joule heating rate, and current sharing are presented for NbTi superconductors.
AB - The operational stability of a composite tape/film-type superconductor is studied by considering the impact of a thermal disturbance distributed along a line. Issues addressed are failure of intrinsic stability, current sharing, Joule heating, and recovery of superconductivity. Mathematical models have been developed to describe the phenomena. The conjugate heat diffusion problem for the superconductor and the stabilizer has been solved by the finite-difference method. The effects of current density and stabilizer dimension have been investigated, resulting in the identification of three modes with regard to the operational stability of the superconductor: intrinsically stable, recoverably unstable, and irrecoverably unstable. Numerical data of instability parameter, convective cooling rate, Joule heating rate, and current sharing are presented for NbTi superconductors.
UR - http://www.scopus.com/inward/record.url?scp=0028550126&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/7/11/012
DO - 10.1088/0953-2048/7/11/012
M3 - Article
AN - SCOPUS:0028550126
SN - 0953-2048
VL - 7
SP - 841
EP - 848
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 11
M1 - 012
ER -