TY - JOUR
T1 - Proposal of fluid stirring by multi-layered trenches for liquid metal divertor
AU - Kawamoto, Makoto
AU - Muraoka, Kenta
AU - Ito, Satoshi
AU - Hashizume, Hidetoshi
N1 - Funding Information:
The experiment was conducted at the High Field Laboratory for Superconducting Materials, Institute for Material Research, Tohoku University as a joint research project (12H0204).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11
Y1 - 2018/11
N2 - This study proposes ″multi-layered trenches″ as a new liquid metal flow stirring structure for the flowing-type liquid metal divertor to prevent the temperature stratification and the evaporation of liquid metal.Then it investigates the characteristics of the liquid metal flow induced by this structure experimentally and numerically. The proof-of-principal experiment using a torus channel simulating the trenches successfully demonstrated the liquid metal wavy flow where the ratio of meandering component to the main stream was 27% under the magnetic field up to 5 T. The experiment and three-dimensional magnetohydrodynamics flow simulation also proved that magnitudes of the wavy flow and the vorticity increased with a rise in the magnetic field. Moreover, two-dimensional heat transfer model simulation showed the heat transfer enhancement by the wavy flow. Maximum temperature was 26.6 K lower than that in the case without the wavy flow.
AB - This study proposes ″multi-layered trenches″ as a new liquid metal flow stirring structure for the flowing-type liquid metal divertor to prevent the temperature stratification and the evaporation of liquid metal.Then it investigates the characteristics of the liquid metal flow induced by this structure experimentally and numerically. The proof-of-principal experiment using a torus channel simulating the trenches successfully demonstrated the liquid metal wavy flow where the ratio of meandering component to the main stream was 27% under the magnetic field up to 5 T. The experiment and three-dimensional magnetohydrodynamics flow simulation also proved that magnitudes of the wavy flow and the vorticity increased with a rise in the magnetic field. Moreover, two-dimensional heat transfer model simulation showed the heat transfer enhancement by the wavy flow. Maximum temperature was 26.6 K lower than that in the case without the wavy flow.
KW - Divertor
KW - Liquid metal
KW - Magnetohydrodynamics
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U2 - 10.1016/j.fusengdes.2018.02.065
DO - 10.1016/j.fusengdes.2018.02.065
M3 - Article
AN - SCOPUS:85045059968
SN - 0920-3796
VL - 136
SP - 415
EP - 419
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
ER -