HEAT simulation and IR data comparison for ST40 plasma-facing components

IF 2.3 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Materials and Energy Pub Date : 2024-11-21 DOI:10.1016/j.nme.2024.101791

E.J.C. Tinacba , T.K. Gray , M. Moscheni , C. Marsden , E. Vekshina , O. Asunta , P. Bunting , S. McNamara , A. Rengle , T. Looby , E.A. Unterberg , ST40 Team

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Abstract

The Heat Flux Engineering Analysis Toolkit (HEAT) (Looby et al., 2022) was used to simulate the heat flux,

q_{t a r g e t}

, on ST40 molybdenum divertors. Results were compared with experimental infrared (IR) data. Two shots, 11419 and 11376 at time instants 119 ms and 120 ms, with lower-biased disconnected double null geometries, were studied. Single-

λ

and multi-

λ

heat flux profiles were used as input in HEAT simulation. The simulated

q_{t a r g e t}

was used in OpenFOAM to calculate the corresponding temperature,

T

, on the divertors. Results showed that a good agreement on the simulated

q_{t a r g e t}

T

and shape of the heat flux on the divertor with the IR data was achieved when a multi-

λ

heat flux profile was used for 11419, and single-

λ

heat flux profile for 11376. This indicates that HEAT can be reliable in analyzing and understanding the heat loading of plasma facing components in tokamak devices.

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ST40 面向等离子体组件的 HEAT 模拟和红外数据比较

热通量工程分析工具包（HEAT）（Looby 等人，2022 年）用于模拟 ST40 钼分流器上的热通量 qtarget。模拟结果与实验红外（IR）数据进行了比较。研究了时间瞬时分别为 119 毫秒和 120 毫秒的 11419 和 11376 两发子弹，它们具有低偏压断开的双空几何结构。单λ和多λ热通量曲线被用作 HEAT 模拟的输入。在 OpenFOAM 中使用模拟的 qtarget 计算分流器上的相应温度 T。结果表明，当对 11419 采用多λ 热通量剖面和对 11376 采用单λ 热通量剖面时，模拟的 qtarget、T 和分流器上的热通量形状与红外数据非常一致。这表明 HEAT 可以可靠地分析和了解托卡马克装置中等离子体面对部件的热负荷。

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

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.