NDLI: Numerical simulation of the stability in a cable-in-conduit conductor developed for fusion magnet applications

Content Provider	IEEE Xplore Digital Library
Author	Wong, R.L. Yeaw, C.T. Shen, S.S. Miller, J.R.
Copyright Year	1991
Description	Author affiliation: Lawrence Livermore Nat. Lab., California Univ., Livermore, CA, USA (Wong, R.L.)
Abstract	The stability margins of the US-Demonstration Poloidal Coil (US-DPC) and the International Thermonuclear Experimental Reactor (ITER) toroidal field (TF) coils have been modeled numerically using the computer program CICC. The computed US-DPC limiting current, I/sub lim/, compares favorably with the values determined experimentally. Using the detailed program CICC output, the authors investigated the DPC quench initiation mechanism in each of the three stability regions. In the ill-cooled region, the imposed heat pulse heats the conductor to the current-sharing temperature. In the transition region, the resistance heating after the pulse must be strong enough to overcome the induced flow reversal. In the well-cooled region, good heat transfer heats the helium during the pulse. After the pulse, these high helium temperatures along with poor heat transfer cause the conductor to quench. Changes in I/sub lim/ agree with Dresner's relationship. I/sub lim/ can be improved by decreasing the copper resistivity, the helium fraction, or the conductor diameter. Preliminary results show the ITER TF coil operating point is in the well-cooled region.<>
Starting Page	326
Ending Page	330
File Size	422293
Page Count	5
File Format	PDF
ISBN	0780301323
DOI	10.1109/FUSION.1991.218812
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-09-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Numerical simulation Coils Conductors Heat transfer Helium Temperature Thermal stability Inductors Numerical models Resistance heating
Content Type	Text
Resource Type	Article

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