DEMO水冷包层第一壁结构优化设计研究

Optimization Design of the First Wall for DEMO Blanket Cooled by Supercritical Water

针对聚变示范堆(DEMO)水冷包层,通过计算流体力学程序CFX和计算结构力学程序ANSYSWorkbench中的SIMULATION模块进行单向流固耦合分析。在对现有设计的DEMO水冷包层第一壁温度和应力数值模拟分析的基础上,改变了第一壁流道结构,着重研究了不同流道结构下的温度和应力分布,分析了几何结构对最高温度和最大应力的影响,提出第一壁结构的优化设计方案。数值模拟结果表明,优化设计方案能有效降低第一壁结构中的最高温度和最大应力。

The thermo-structural performance of the first wall for DEMO （Fusion Dem- onstration Reactor） blanket cooled by supercritical water was investigated. A coupled code CFX/ANSYS Workbench was used to analyse the temperature and stress distribu- tions of structural material while different geometrical configurations of flow channels were applied. Based on the results achieved so far, an optimized design scheme is suggested on the modification of the design structure and geometric configuration of flow channels, which can effectively reduce the maximum temperature and stress of the structural material.