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arXiv 1402.4237cond-mat.mtrl-sciphysics.chem-ph
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熔盐快堆燃料热物理性质的第一性原理预测

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

A. E. Gheribi, D. Corradini, L. Dewan, P. Chartrand, C. Simon, P. A. Madden, M. Salanne

摘要:

熔融氟化物具有良好的热物理性质,是核裂变反应堆的理想冷却剂。在这里,我们调查氟化锂和氟化钍的混合物的特殊情况下,既作为冷却剂和燃料的熔盐快堆的概念。通过使用从头算参数化的极化力场,我们表明,它是可能的,以计算整套的属性(密度,热膨胀,热容,粘度和热导率),这是必要的评估在整个范围内的组合物和温度的熔体的传热性能。然后,我们从我们的计算中推导出几个数字的优点,这是重要的,在帮助优化设计的熔盐快堆。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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