中文摘要：

液态金属与其合金已被广泛地应用于聚变堆包层，其中液态金属锂铅以其独特的中子性能和传热性能，在液态产氚包层中常被用作增殖剂与冷却剂。液态金属锂铅实验回路是研究聚变堆液态金属包层冷却剂载热性能和技术的最佳实验平台。为了探索高温液态锂铅在回路管道中的流动与传热，设计并计划建造一小型的液态金属锂铅实验回路，并应用大型计算流体力学软件对回路中液态锂铅流体的流动情况和温度分布进行了数值模拟和分析。

英文摘要：

The liquid metals or alloys have been widely used in fusion reactor blanket, especially the liquid metal LiPb is adopted as a major proliferator and coolant of tritium blanket due to its unique neutron and heat transfer properties. The liquid metal LiPb experimental loop is the best experimental platform to study the heat transfer property and technology of the liquid metal blanket of fusion reactor. In order to explore the flow and heat transfer of high-temperature liquid LiPb in the loop pipeline, a small liquid metal LiPb experimental loop is designed and built, and the CFD code is utilized for the numerical simulation of the flow and temperature distribution of the liquid LiPb in the loop.