铅铋冷却快堆子通道热工水力初步数值分析

为探索铅铋冷却快堆子通道的热工水力特性，自主研发了SACOS-PB子通道程序。本工作以矩形通道9根棒束组件为例，使用SACOS-PB程序对铅铋冷却快堆子通道的温度场进行了模拟分析，并用CFX软件进行验证。结果显示，SACOS-PB程序计算结果与文献值比较符合，与CFX软件计算结果符合度也较高。使用SACOS-PB程序分析比较了3种组件结构，表明在铅铋冷却快堆中更适宜使用六边形通道，为进一步对铅铋冷却快堆子通道进行热工水力特性分析奠定了基础。

Thermal-Hydraulic Primary Numerical Analysis for Pb-Bi Fast Reactor Sub-channel

To explore the thermal-hydraulics characters of Pb-Bi fast reactor sub-channel, the sub-channel program SACOS-PB was developed independently. As an example, the rectangle nine fuel rods construction was set, and its coolant temperature along the axial length was calculated. The results show that calculating results are good agreement with the reference results and the CFX calculating results. The three different constructions of the sub-channels were analyzed using SACOS-PB program, and the results show that the hexagon construction is the most suitable construction. The current research results establish a foundation for the further study.