金属液滴对面向等离子体部件的冲击模拟

IF 2.3 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Materials and Energy Pub Date : 2024-10-15 DOI:10.1016/j.nme.2024.101748

L. Vignitchouk, S. Ratynskaia, JET Contributors

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引用次数: 0

摘要

在磁约束聚变装置的代表性条件下，对液态金属液滴与面向等离子体的固体部件碰撞进行了多相纳维-斯托克斯模拟。研究了扩散液体的流动动力学，以评估各种物理过程在碰撞能量预算中的相对重要性。结果表明，初始液滴表面能和凝固引起的动量汇对确定冷冻飞溅物的最终几何形状非常重要。对文献中的半经验缩放定律进行了调整，以提供对扁平率的可靠预测，并可推断出与核聚变有关的一般撞击情景。

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Metallic droplet impact simulations on plasma-facing components

Multiphase Navier–Stokes simulations of liquid metal droplets colliding with solid plasma-facing components are carried out in conditions representative of magnetic confinement fusion devices. The flow dynamics of the spreading liquid are examined to assess the relative importance of various physical processes in the impact energy budget. Contributions from the initial droplet surface energy and the solidification-induced momentum sink are shown to be of great importance in determining the final geometry of the frozen spatter. Semi-empirical scaling laws available in the literature are adapted to provide robust predictions of the flattening ratio that can be extrapolated to general fusion-relevant impact scenarios.

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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.