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Theory of thermal hydraulic quenchback in cable-in-conduit superconductors

✍ Scribed by L. Dresner

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
454 KB
Volume
31
Category
Article
ISSN
0011-2275

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✦ Synopsis

In a numerical simulation of the motion induced by local heating of the helium in a cable-inconduit superconductor Luongo et al. discovered a new phenomenon they called thermal hydraulic quenchback. After the creation of a local normal zone, its expansion compresses and displaces adjacent cold helium. This compression and displacement heat the cold helium and case long segments of the conductor rapidly to become normal. The propagation velocity thus appears to increase rather suddenly. The present paper describes an analytical study of this phenomenon. The main result is a simple formula for the time at which thermal hydraulic quenchback first starts.

πŸ“œ SIMILAR VOLUMES

Direct solution approximation to the the
Direct solution approximation to the thermal hydraulic quenchback in superconducting cables
✍ Gustavo LΓ³pez πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 240 KB

Using an approximation to the conduction fluid equations, a solution is given based on direct integration. The solution is used to establish a relationship between quench velocity and conductor length in a cable-in-conduit-type configuration.

Empirical investigation of factors affec
Empirical investigation of factors affecting the stability of cable-in-conduit superconductors
✍ J.R. Miller πŸ“‚ Article πŸ“… 1985 πŸ› Elsevier Science 🌐 English βš– 534 KB

Experiments investigating the stability of cable-in-conduit superconductors were performed using test conductors composed of small, quadruplex cables enclosed in steel tubes. To examine the effects of a variation in stabilizer resistivity, all test conductors contained two strands of identical NbTi/

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Transient stability of a Nbξ—ΈTi cable-in-conduit superconductor: Experimental results
✍ P.E. Phelan; Y. Iwasa; Y. Takahashi; H. Tsuji; M. Nishi; E. Tada; K. Yoshida; S. πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 974 KB

The transient stability of a Nb-Ti, cable-in-conduit conductor cooled with supercritical helium was investigated experimentally by inductively heating the conductor for short-time durations. Data were gathered for zero and nonzero imposed flow rates. In addition, some of the zero-flow measurements w