Computer Simulation of Quench Propagation in QUELL

  • R. Zanino
  • L. Bottura
  • C. Marinucci
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

In the Quench Experiment on Long Length (QUELL), in the SULTAN facility, quench propagation was studied in a well instrumented sample wound using a Nb3Sn cable-in-conduit conductor (CICC) with central cooling channel, cooled by supercritical helium I. A few selected runs have been analyzed here by means of two different computer models — Mithrandir and Gandalf, using the same set of common input parameters, helium and material properties, heat transfer and fluid dynamic correlations. The predictions of the two codes are compared in detail with each other and against experimental data. Both codes are 1-D tools for the description of thermal-hydraulic transients in CICCs with cooling channel; Mithrandir differs from Gandalf mainly because it does not assume, as the latter does, the same thermodynamic state for the helium in the cable bundle region and the helium in the cooling channel. It turns out that although the 1-fluid model (Gandalf) gives a reasonable agreement with the experiment, 2-fluid (Mithrandir) modeling is more accurate both qualitatively and quantitatively.

Keywords

Heat Transfer Coefficient Quench Experiment Adaptive Finite Element Method Resistive Voltage Hydraulic Coupling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • R. Zanino
    • 1
  • L. Bottura
    • 2
  • C. Marinucci
    • 3
  1. 1.Dipartimento di EnergeticaTorinoItaly
  2. 2.Div. LHC-MTACERNGeneve 23Switzerland
  3. 3.CRPP-Fusion technology Div.EPFLVilligen PSISwitzerland

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