高燃耗乏燃料包壳延性评价热工分析方法研究

Thermal Analysis on Ductility of High Burn-Up Spent Fuel Cladding

为了论证乏燃料运输容器拟运输高燃耗乏燃料包壳的完整性,需要开展高燃耗乏燃料包壳的延性评价。本文基于STAR-CCM+软件建立三维CFD分析模型开展热工分析,建立了乏燃料运输容器热工分析的方法。在此基础上,通过计算得到了不同冷、热态工况下燃料包壳的最大温差,提出了一套高燃耗乏燃料包壳延性评价热工分析的方法,为后续开展高燃耗乏燃料包壳延性评价热工分析提供依据。

In order to demonstrate the integrity of the high burn-up spent fuel cladding transportation, it is necessary to conduct the ductility evaluation of the high burn-up spent fuel cladding. This paper established a three-dimensional CFD analysis model based on STAR-CCM+ code for thermal analysis, and established a method for thermal analysis of spent fuel transport casks. On this basis, the maximum temperature difference of fuel cladding under different cold and thermal operating mode is calculated, and thermal analysis methodology of spent fuel transportation container for ductility evaluation is established, which provide a foundation for subsequent thermal analysis of high burn-up cladding ductility evaluation.