Comparison of measured value and calculated value of multiple stability in forced-flow cooled superconductors

Author

Amano, T. ; Nakamura, S. ; Yamada, T. ; Watabe, S. ; Kamitani, A.

Author_Institution

Mitsubishi Electr. Corp., Hyogo, Japan

Volume

2

Issue

4

fYear

1992

Firstpage

205

Lastpage

213

Abstract

The multiple stability observed exclusively in forced-flow cooled superconductors is numerically calculated, and the result is quantitatively compared with the value measured by J.W. Lue et al. (1980). The calculated and measured values agreed well in certain cases, and did not in others. Based on this comparison, the effects of the transient heat transfer coefficient and ohmic heat generation on the quantitative prediction of stability are discussed. From this comparison, it is learned that a precise understanding of the transient heat transfer coefficient is essential for reliable predictions, and also that the ordinary evaluation method of ohmic heat generation, which considers the flux-flow resistance, tends to overevaluate the situation.<>

Keywords

flux flow; heat transfer; stability; superconducting magnets; flux-flow resistance; forced-flow cooled superconductors; multiple stability; ohmic heat generation; superconducting coils; transient heat transfer coefficient; Force measurement; Heat transfer; Magnetic fields; Numerical analysis; Numerical models; Numerical simulation; Numerical stability; Stability analysis; Superconductivity; Thermal stability;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.182732

Filename

182732