Abstract We report a method to model, simulate and predict high-level nuclear waste (HLW) thermal behavior over short and long time-scales. The approach relies on an inverse method using homogenized thermal fluxes at the HLW package surfaces during the vitrification process. The thermal simulation can then be used as input in subsequent structural analyses. This allows us to compare for two different vitrification processes the developed thermal stress build-up investigated inside the glass block. The first process is the original experimental vitrification process, without the presence of the radionuclides. The second one is a simulation made possible by the proposed inverse method, where the cooling and solidification for a HLW integrate the long-term heat source of the radionuclides.

中文翻译：

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一种预测玻璃化和冷却过程中核废料玻璃罐中热通量的逆方法

摘要 我们报告了一种在短期和长期内对高放核废料 (HLW) 热行为进行建模、模拟和预测的方法。该方法依赖于在玻璃化过程中在 HLW 封装表面使用均匀热通量的逆方法。然后可以将热模拟用作后续结构分析的输入。这使我们能够比较两种不同的玻璃化过程，研究玻璃块内部的热应力积累。第一个过程是原始的实验玻璃化过程，不存在放射性核素。第二个是通过建议的逆方法进行的模拟，其中 HLW 的冷却和凝固整合了放射性核素的长期热源。