Coupled model for liquid lithium plasma facing components

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Fusion Engineering and Design Pub Date : 2024-09-03 DOI:10.1016/j.fusengdes.2024.114651

Andrei Khodak, Eric Emdee, Robert Goldston, Rajesh Maingi

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引用次数: 0

Abstract

Numerical analysis provides the design choice and operating window of liquid metal Plasma Facing Components (PFC) concepts. Coupled analysis of boundary plasma together with the surrounding boundary structures is required. To achieve this goal, PPPL is developing a comprehensive multi-physics model for modeling of PFCs in fusion devices. The model includes the fluid-kinetic code SOLPS-ITER and the flow and heat transfer code CFX from ANSYS. SOLPS-ITER was augmented with a liquid metal boundary condition algorithm, allowing direct two-way coupling of the plasma analysis with the two-dimensional analytical slab flow model which includes heat convection in the liquid metal PFC. The target heat flux resulting from this coupled analysis is used as a boundary condition for detailed 3D Computational Fluid Dynamics (CFD) Magneto Hydro Dynamics (MHD) and heat transfer analysis. A new formulation of MHD equations is introduced in the numerical procedure ensuring current conservation of the discretized equations. Results of the 3D analysis are used for final validation of the coupled model. A PFC design where a porous wall is used to stabilize the liquid metal surface, while MHD drive is used to push the liquid metal flow inside the PFC, will be investigated in the regimes where vapor shielding is created for enhanced volumetric plasma heat dissipation.

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面向组件的液态锂等离子体耦合模型

数值分析为液态金属等离子面组件（PFC）概念提供了设计选择和运行窗口。需要对边界等离子体和周围边界结构进行耦合分析。为实现这一目标，PPPL 正在开发一个用于聚变装置中 PFC 建模的综合多物理场模型。该模型包括流体动力学代码 SOLPS-ITER 和 ANSYS 的流动与传热代码 CFX。SOLPS-ITER 使用液态金属边界条件算法进行了增强，允许等离子体分析与包括液态金属 PFC 中热对流的二维分析板坯流模型直接双向耦合。这种耦合分析得出的目标热通量被用作详细三维计算流体动力学（CFD）磁水动力学（MHD）和传热分析的边界条件。数值程序中引入了新的 MHD 方程，以确保离散方程的电流守恒。三维分析结果用于耦合模型的最终验证。将研究一种 PFC 设计，其中多孔壁用于稳定液态金属表面，而 MHD 驱动则用于推动 PFC 内部的液态金属流。

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.