数字反应堆发展与挑战
Digital Reactor: Development and Challenges
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摘要: 数字反应堆是针对反应堆系统开展综合性能数值模拟的集成平台。本文回顾了反应堆数值模拟技术的发展历程,并阐述了构成数字反应堆的3个技术要素:目标场景、先进模型与多物理场耦合技术、集成环境。尽管目前数字反应堆发展还面临若干技术挑战,如多学科和多尺度计算的时空协调问题、设计优化的复杂性、缺乏数据库等,但数字反应堆仍能更好地分析限制反应堆性能或影响反应堆安全的关键问题,以及从机理上解释那些无法通过试验观察或测量的现象。Abstract: The digital reactor is an integral numerical simulation platform for the performance of nuclear reactor systems. In the first part of this paper, the development history of the nuclear reactor simulation technology is reviewed. The three technical elements constituting the digital reactor are elaborated, including the target scenario, advanced models and multi-physics coupling technology, and the integrating environment. Although there are several challenges for the development of digital reactors, such as the difficulties in multi-physics and multi-scale computation, the complexity in design optimization, and the insufficient database, the digital reactor can help better analyze key problems that limiting the reactor performances and safety, and better understand the mechanism of the phenomena that cannot be observed or measured experimentally.
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Key words:
- Nuclear reactor /
- Simulation /
- Multi-physics
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