5-9 September 2016
Prague Congress Centre
Europe/Prague timezone

P1.083 Experimental stand for thermal-hydraulic tests of forced flow conductors using water at room temperature

5 Sep 2016, 14:20
1h 40m
Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Foyer 2A (2nd floor), 3A (3rd floor)

Prague Congress Centre

5. května 65, Prague, Czech Republic
Board: 83
Poster E. Magnets and Power Supplies P1 Poster session

Speaker

Aleksandra Dembkowska (Faculty of Mechanical Engineering and Mechatronics)

Description

Current models used for thermal–hydraulic analyses of forced-flow superconducting cables used in fusion technology, such as e.g. Cable-in-Conduit Conductors, are typically 1-D and they require reliable predictive correlations for the transverse mass-, momentum- and energy transport processes occurring between the different cable components in order to reliably assess any fusion magnet design in both normal and off-normal operating conditions. The void fraction of some of Nb3Sn superconducting cables designed for the DEMO Toroidal Field coil is strongly reduced (down to about 20%). Conductors with such low void fractions geometries  have never been tested for pressure drop yet. Moreover, it was observed that discrepancy between predictions of different bundle friction factor correlations available in literature strongly increases with decreasing the void fraction. There is a need of experimental verification of the accuracy of the existing predictive friction factor correlations at very low void fractions. In this aim a new experimental stand for thermal-hydraulic tests of conductors using water at room temperature is under preparation at West Pomeranian University of Technology, Szczecin. The installation has been designed to enable pressure drop measurements in short samples of conductors with low void fractions in a wide range of Reynolds number. The aim of this paper is to present the new installation and to discuss the first tests results conducted on reference samples and DEMO-like samples fabricated in the EU DEMO design framework.

Co-authors

Aleksandra Dembkowska (Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Al. Piastów 19, 70-310 Szczecin, Poland) Leszek Malinowski (Faculty of Maritime Technology and Transport, West Pomeranian University of Technology, Szczecin, Al. Piastów 41, 71-065 Szczecin, Poland) Louis Zani (IRFM, CEA, F-13108 St-Paul-lez-Durance, France , France) Monika Lewandowska (Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, Al. Piastow 48, 70-311 Szczecin, Poland) Wojciech Rachtan (Faculty of Maritime Technology and Transport, West Pomeranian University of Technology, Szczecin, Al. Piastów 41, 71-065 Szczecin, Poland)

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