Article

# Multi-solid multi-channel Mithrandir (M3) code for thermal–hydraulic modelling of ITER Cable-in-Conduit Superconductors

Dipartimento di Energetica, Politecnico, C.so Duca degli abruzzi 24, 10129 Torino, Italy

Fusion Engineering and Design 01/2007; DOI: 10.1016/j.fusengdes.2007.04.035 - [Show abstract] [Hide abstract]

**ABSTRACT:**The THELMA code is used to study the coupled thermal-hydraulic electro-magnetic problem of the current and temperature distribution inside the TFPRO2 Nb<sub>3</sub>Sn SULTAN sample, which was tested in 2007. The code computes self-consistent voltage and temperature values both on the jacket, where they are measured, and inside the cable, where they are more directly representative of the conductor performance. The measured temperature gradients, related to non-uniform Joule heating at the joint and in the high-field region, as well as to non uniform current distribution, are reasonably well reproduced by the model, together with the voltage-current characteristics.IEEE Transactions on Applied Superconductivity 07/2009; · 1.20 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**The paper presents the results of a numerical analysis campaign which studies the steady-state behavior and the typical tests (current-sharing temperature and critical current measurements) foreseen for the SULTAN samples of the ITER TF reference conductor, with special emphasis to the current and electric field distribution among and along the sub-cables. In this analysis, the sample geometrical parameters (twist pitch, joint/termination length) and some electrical parameters (joint, termination and inter-bundle resistance) are supposed to range in their design or their measured boundaries, in order to understand their individual effect on the conductor performances and the test conditions.IEEE Transactions on Applied Superconductivity 07/2009; · 1.20 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**We analyse the issues of quench propagation in the NbTi Poloidal Field Conductor Insert (PFCI), recently tested at JAEA Naka, Japan. The simulation tools Mithrandir, already validated against data from previous Nb3Sn Insert Coils, and M3, implementing a more detailed thermal-hydraulic description of the CICC cross section, are used. The results of the analysis are reported in the paper and compared with experimental data, with particular attention to NbTi versus Nb3Sn features and to the effects of different model assumptions.IEEE Transactions on Applied Superconductivity 07/2010; · 1.20 Impact Factor

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