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Numerical simulation of the He II/He I phase transition in superconducting magnets.

Author(s) : MAO S., LUONGO C. A., KOPRIVA D. A.

Type of article: Article

Summary

In this paper we simulate a special type of Stefan problem in large-scale superconducting magnet systems in which superfluid helium (He II) is used as the coolant for the system. Liquid helium in a narrow channel called a "cable-in-conduit" conductor (CICC) is used to remove the heat load from the conductors. Liquid helium exhibits a phase change transition to normal helium (He I) when its temperature rises above the lambda point (2.716 K under saturated vapor pressure). A simple one-dimensional model is described to analyze this special He II/He I Stefan problem. A moving mesh technique is used to solve this model to improve the numerical efficiency compared with front-tracking methods. The results illustrate the simplicity and efficiency of this model. [Reprinted with permission from Elsevier. Copyright, 2006].

Details

  • Original title: Numerical simulation of the He II/He I phase transition in superconducting magnets.
  • Record ID : 2007-0477
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 49 - n. 25-26
  • Publication date: 2006/12

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