Application of the radio species transport model to the JSI water activation loop

IF 2 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Fusion Engineering and Design Pub Date : 2025-06-13 DOI:10.1016/j.fusengdes.2025.115264

Eduardo Masiá , Francesca Cau , Aljaz Kolsek , Raúl Pampín , Marco Fabbri , Luka Snoj , Domen Kotnik , Rosaria Villari , Alfredo Portone

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引用次数: 0

Abstract

The development of analysis tools to calculate the activation of flowing water under irradiation is essential for fusion technology and for the ITER project. The Radio-Species Transport Model (RSTM) method is a simulation methodology developed by Fusion for Energy based on the Ansys Fluent® user-defined scalar (UDS) approach. It predicts the activation of a flowing fluid in domains where neutron fields and flow regimes require the coupling of activation and fluid dynamic effects. RSTM was successfully applied to ITER First Wall (FW) studies and benchmarked against experiments at the Frascati Neutron Generator (FNG).

This research focuses on the application of the RSTM to the KATANA closed water activation loop at the JSI TRIGA Mark II fission reactor, as part of the EUROfusion Preparation of ITER Operation (PrIO) programme. Future work will compare these results with experimental data and other predictive tools including ActiFlow, GammaFlow (by UKAEA) and FLUNED (by UNED).

In the next phase of operation, the KATANA facility aims to tackle experiments more relevant to ITER conditions. For this reason, Fusion for Energy is applying RSTM to design an alternative irradiation head that resembles the cooling circuit of an ITER First Wall panel, this being one of the main components where the water undergoes activation.

This study shows the results of the RSTM tool for the current configuration of the JSI KATANA water activation loop. Conclusions are drawn on the relevance of the alternative ITER-relevant irradiation head for the next phase of the JSI water activation loop.

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放射性物质输运模型在JSI水活化环中的应用

开发用于计算辐照下流动水活化度的分析工具对核聚变技术和ITER项目至关重要。RSTM （Radio-Species Transport Model）方法是Fusion for Energy基于Ansys Fluent®用户定义标量（UDS）方法开发的一种仿真方法。在中子场和流态需要活化和流体动力学效应耦合的区域，它预测了流动流体的活化。RSTM成功地应用于ITER第一壁（FW）的研究，并与弗拉斯卡蒂中子发生器（FNG）的实验进行了基准测试。这项研究的重点是将RSTM应用于JSI TRIGA Mark II裂变反应堆的KATANA闭水激活回路，作为ITER运行（PrIO）计划的欧洲聚变准备的一部分。未来的工作将把这些结果与实验数据和其他预测工具进行比较，包括ActiFlow、GammaFlow（由UKAEA开发）和FLUNED（由UNED开发）。在运行的下一阶段，KATANA设施的目标是处理与ITER条件更相关的实验。出于这个原因，聚变能源正在应用RSTM设计一个替代的辐照头，类似于ITER第一壁板的冷却回路，这是水经历激活的主要部件之一。本研究展示了RSTM工具对JSI KATANA水激活环当前配置的结果。结论得出了替代iter相关的辐照头与JSI水活化回路下一阶段的相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fusion Engineering and Design 工程技术-核科学技术

CiteScore

3.50

自引率

23.50%

发文量

275

审稿时长

3.8 months

期刊介绍： The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.