The development and demonstration of fusion power plant facilities require advancement of multiphysics modeling capabilities. These capabilities provide an integrated platform for design and analysis of a fusion engineering demonstration power plant. We present a state-of-the-art literature review of the status and needs of multiphysics modeling, including neutronics analysis, and thermal hydraulic/mechanical simulation tools in support of fusion powerplant system design and integration. In this paper we use the Fusion Nuclear Science Facility (FNSF) concept as an example system to assess future needs for advancement of multiphysics modeling capabilities. Specifically, we discuss the latest progress on R&D missions in the literature which are specific to the neutronics and thermal hydraulics design of the breeding blanket concept chosen for the FNSF, the Dual Coolant Lead Lithium (DCLL) blanket. We identify future R&D needs to be addressed through the development of multiphysics modeling capabilities that tie fusion neutronics to tritium breeding ratio (TBR), neutron wall loading (NWL), material damage and transmutation, shutdown dose, and safety assessments. The capabilities will support the design and licensing of a fusion engineering demonstration facility as well as a future engineering demonstration plant.

中文翻译：

---

繁殖毯设计的热水力系统分析综述以及聚变工程示范设施设计和许可的未来需求

聚变发电厂设施的开发和示范需要提高多物理场建模能力。这些功能为聚变工程示范电厂的设计和分析提供了一个集成平台。我们对多物理场建模的现状和需求进行了最先进的文献综述，包括中子学分析和支持聚变动力装置系统设计和集成的热工水力/机械仿真工具。在本文中，我们使用聚变核科学设施（FNSF）概念作为示例系统来评估未来对多物理场建模能力进步的需求。具体来说，我们讨论了文献中研发任务的最新进展，这些文献专门针对为 FNSF 选择的育种包层概念（双冷却剂铅锂 (DCLL) 包层）的中子学和热工水力设计。我们确定未来的研发需要通过开发多物理场建模能力来解决，这些建模能力将聚变中子学与氚增殖比（TBR）、中子壁载荷（NWL）、材料损伤和嬗变、停堆剂量和安全评估联系起来。这些能力将支持聚变工程示范设施以及未来工程示范工厂的设计和许可。