Abstract In this study, a three-dimensional transient metal hydride model is applied to two different depleted uranium (DU) bed designs. One bed is designed to contain 1.86 kg DU for a hydrogen isotope storage capacity of 70 g, and it is loaded with copper foam to enhance internal heat transfer. The other bed is designed to contain 5.26 kg DU for a hydrogen isotope storage capacity of 200 g, and it uses copper fins to enhance internal heat transfer. A numerical study is conducted to analyze the dehydriding characteristics of two different DU bed designs. A parallel computing methodology is used to effectively reduce the computational turnaround time involved for full-scale DU bed geometries. The detailed simulation results show the evolution of temperature and hydrogen-to-metal atomic ratio contours at different hydrogen desorption stages and reveal the different DU dehydriding behaviors of the two DU beds. In sum, the present work elucidates the effects of key bed design parameters and helps identify optimal DU bed design strategies to effectively charge and discharge hydrogen isotopes.

中文翻译：

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配备铜泡沫或铜翅片的全尺寸贫铀床脱氢行为的数值比较

摘要 在这项研究中，三维瞬态金属氢化物模型应用于两种不同的贫铀 (DU) 床设计。一张床被设计为包含 1.86 kg DU，用于 70 g 的氢同位素存储容量，并装有泡沫铜以增强内部传热。另一个床被设计为包含 5.26 kg DU，氢同位素存储容量为 200 g，它使用铜翅片来增强内部传热。进行数值研究以分析两种不同的 DU 床设计的脱水特性。并行计算方法用于有效减少全尺寸 DU 床几何形状所涉及的计算周转时间。详细的模拟结果显示了不同氢解吸阶段的温度和氢金属原子比等值线的演变，并揭示了两个 DU 床的不同 DU 脱氢行为。总之，目前的工作阐明了关键床设计参数的影响，并有助于确定最佳的 DU 床设计策略，以有效地充放氢同位素。