Stability analysis for a composite superconductor subjected to a linear thermal disturbance

S. Y. Seol; M. C. Chyu

Stability analysis for a composite superconductor subjected to a linear thermal disturbance

S. Y. Seol, M. C. Chyu

Mechanical Engineering

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

The operational stability of a composite film/tape 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. Conjugate heat diffusion problem for the superconductor and the stabilizer have been solved using finite-difference method. The effects of current density and stabilizer dimension have been investigated, resulting in identification of three characteristic regions with regard to the operational stability of the superconductor. The composite superconductor was found to be intrinsically stable, recoverably unstable, or irrecoverably unstable. Numerical data of instability parameter, convective cooling rate, joule heating rate, and current sharing are presented for a high-T_c YBCO superconductor.

Original language	English
Pages (from-to)	515-520
Number of pages	6
Journal	Proceedings of the Intersociety Energy Conversion Engineering Conference
Volume	4
State	Published - 1991
Event	Proceedings of the 26th Intersociety Energy Conversion Engineering Conference - IECEC '91 - Boston, MA, USA Duration: Aug 4 1991 → Aug 9 1991

Cite this

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title = "Stability analysis for a composite superconductor subjected to a linear thermal disturbance",

abstract = "The operational stability of a composite film/tape 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. Conjugate heat diffusion problem for the superconductor and the stabilizer have been solved using finite-difference method. The effects of current density and stabilizer dimension have been investigated, resulting in identification of three characteristic regions with regard to the operational stability of the superconductor. The composite superconductor was found to be intrinsically stable, recoverably unstable, or irrecoverably unstable. Numerical data of instability parameter, convective cooling rate, joule heating rate, and current sharing are presented for a high-Tc YBCO superconductor.",

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language = "English",

volume = "4",

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journal = "Proceedings of the Intersociety Energy Conversion Engineering Conference",

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note = "Proceedings of the 26th Intersociety Energy Conversion Engineering Conference - IECEC '91 ; Conference date: 04-08-1991 Through 09-08-1991",

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TY - JOUR

T1 - Stability analysis for a composite superconductor subjected to a linear thermal disturbance

AU - Seol, S. Y.

AU - Chyu, M. C.

PY - 1991

Y1 - 1991

N2 - The operational stability of a composite film/tape 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. Conjugate heat diffusion problem for the superconductor and the stabilizer have been solved using finite-difference method. The effects of current density and stabilizer dimension have been investigated, resulting in identification of three characteristic regions with regard to the operational stability of the superconductor. The composite superconductor was found to be intrinsically stable, recoverably unstable, or irrecoverably unstable. Numerical data of instability parameter, convective cooling rate, joule heating rate, and current sharing are presented for a high-Tc YBCO superconductor.

AB - The operational stability of a composite film/tape 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. Conjugate heat diffusion problem for the superconductor and the stabilizer have been solved using finite-difference method. The effects of current density and stabilizer dimension have been investigated, resulting in identification of three characteristic regions with regard to the operational stability of the superconductor. The composite superconductor was found to be intrinsically stable, recoverably unstable, or irrecoverably unstable. Numerical data of instability parameter, convective cooling rate, joule heating rate, and current sharing are presented for a high-Tc YBCO superconductor.

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M3 - Conference article

AN - SCOPUS:0025748490

SN - 0146-955X

VL - 4

SP - 515

EP - 520

JO - Proceedings of the Intersociety Energy Conversion Engineering Conference

JF - Proceedings of the Intersociety Energy Conversion Engineering Conference

T2 - Proceedings of the 26th Intersociety Energy Conversion Engineering Conference - IECEC '91

Y2 - 4 August 1991 through 9 August 1991

ER -

Stability analysis for a composite superconductor subjected to a linear thermal disturbance

Abstract

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