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Prediction of the thermophysical properties of molten salt fast reactor fuel from first-principles

Abstract : Molten fluorides are known to show favorable thermophysical properties which make them good candidate coolants for nuclear fission reactors. Here we investigate the special case of mixtures of lithium fluoride and thorium fluoride, which act both as coolant and fuel in the molten salt fast reactor concept. By using ab initio parameterized polarizable force fields, we show that it is possible to calculate the whole set of properties (density, thermal expansion, heat capacity, viscosity and thermal conductivity) which are necessary for assessing the heat transfer performance of the melt over the whole range of compositions and temperatures. We then deduce from our calculations several figures of merit which are important in helping the optimization of the design of molten salt fast reactors.
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https://hal.sorbonne-universite.fr/hal-01100299
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Submitted on : Tuesday, January 6, 2015 - 11:33:21 AM
Last modification on : Wednesday, December 9, 2020 - 3:12:47 PM
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Aimen Gheribi, D Corradini, L Dewan, P Chartrand, C Simon, et al.. Prediction of the thermophysical properties of molten salt fast reactor fuel from first-principles. Molecular Physics, Taylor & Francis, 2014, 112, pp.1305 - 1312. ⟨10.1080/00268976.2014.897396⟩. ⟨hal-01100299⟩

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