Abstract The purpose of this study is to investigate the influence of design parameters for the scale-up of the depleted uranium (DU) bed. The actual DU bed chosen for this study has a DU loading of 1.86 kg for a tritium capacity of 70 g and is cylindrical in shape and equipped with copper foam to enhance internal heat transfer. Based on the reference DU bed geometry, three different scale-up bed geometries to increase the amount of DU loading up to 9.3 kg were designed under different aspect ratios for comparison purposes and simulated using a three-dimensional transient DU hydride model developed in our previous studies. The simulation results are compared in terms of the evolution of the DU hydride temperature and H/U atomic ratio during the DU hydriding process. This study helps to identify key design parameters (e.g., it is critical to scale up the DU bed geometry).

中文翻译：

---

用于氢同位素储存的贫化铀 (DU) 床的放大效应

摘要 本研究的目的是研究设计参数对贫化铀（DU）床放大的影响。本研究选择的实际 DU 床的 DU 负载为 1.86 kg，氚容量为 70 g，呈圆柱形，并配有泡沫铜以增强内部传热。基于参考 DU 床几何形状，在不同纵横比下设计了三种不同的放大床几何形状以将 DU 负载量增加到 9.3 kg 以进行比较，并使用我们之前开发的三维瞬态 DU 氢化物模型进行模拟学习。模拟结果在 DU 氢化过程中 DU 氢化物温度和 H/U 原子比的演变方面进行了比较。这项研究有助于确定关键的设计参数（例如，