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首页> 外文期刊>Fusion Engineering and Design >A scaling law of pressurisation time in the case of Loss Of Vacuum Accidents (LOVAs): Theoretical and experimental analysis
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A scaling law of pressurisation time in the case of Loss Of Vacuum Accidents (LOVAs): Theoretical and experimental analysis

机译：真空事故（LOVA）情况下增压时间的比例定律：理论和实验分析

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摘要

The Loss Of Vacuum Accident is one of the hazardous events that may occur in nuclear fusion power plants which work with the magnetic confinement technology. During these accidents, the intake of air may re-suspend toxic, explosive and radioactive dust, involving a hazardous release in the external environment. Several studies have been conducted in scaled facilities, in order to investigate and understand how the phenomenon works. In the previous studies, the authors replicated these events in several different conditions by means of the scaled facility called "STARDUST-Upgrade", providing a good description of the phenomenon. A Computational Fluid Dynamic (CFD) code able to replicate these events has been developed and validated. Once a scaled experiment is realized, a specific analysis must be performed to understand if the phenomenon can be scaled and in what conditions. A result obtained in STARDUST-Upgrade, that is much different in terms of size and shape from a real TOKAMAK, must be modified by an adequate scaling law. The aim of this work is to analyse how to deduce a scaling law (for large scale flow) by a theoretical analysis based on the Buckingham pi theorem. The authors will present also the experimental analysis provided to validate some features of this model. The conclusion of the work will be the use of the scaling law to obtain technical information (pressurisation time) about a LOVA inside an ITER-like reactor and further fusion power plants.
机译：真空损失事故是使用磁约束技术的核聚变电厂中可能发生的危险事件之一。在这些事故中，空气的吸入可能会重悬有毒，爆炸性和放射性的粉尘，并涉及到外部环境中的危险释放物。为了调查和了解这种现象如何起作用，已经在规模较大的设施中进行了一些研究。在先前的研究中，作者通过称为“ STARDUST-Upgrade ”的扩展设施，在几种不同条件下复制了这些事件，从而很好地描述了这一现象。已经开发并验证了能够复制这些事件的计算流体力学（CFD）代码。一旦实现了规模化实验，就必须进行特定分析，以了解现象是否可以规模化以及在什么条件下可以扩展。在STARDUST-Upgrade中获得的结果在大小和形状上与真实的TOKAMAK有很大不同，必须通过适当的缩放定律进行修改。这项工作的目的是通过基于白金汉pi定理的理论分析来分析如何推导比例定律（针对大流量）。作者还将介绍提供的实验分析，以验证该模型的某些功能。这项工作的结论将是使用定标律来获得有关ITER型反应堆和进一步的聚变电站内LOVA的技术信息（加压时间）。

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  • 来源
    《Fusion Engineering and Design》 |2019年第6期|16-23|共8页
  • 作者

    Rossi Riccardo; Ciparisse Jean-Francois; Gaudio Pasquale; Malizia Andrea;

  • 作者单位

    Univ Roma Tor Vergata, Dept Ind Engn, Via Politecn 1, I-00133 Rome, Italy;

    Univ Roma Tor Vergata, Dept Ind Engn, Via Politecn 1, I-00133 Rome, Italy;

    Univ Roma Tor Vergata, Dept Ind Engn, Via Politecn 1, I-00133 Rome, Italy;

    Univ Roma Tor Vergata, Dept Biomed & Prevent, Via Politecn 1, I-00133 Rome, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LOVA; Scaling law; Pressurisation; TOKAMAK;

    机译：LOVA;定标法;增压;TOKAMAK;

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