核反应堆容器及内部流固耦合计算方法及典型实例

IF 2.6 4区 综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES
Pascal Veber, Fredrik Tornberg, Afaque Shams, Osman K. Siddiqui
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引用次数: 0

摘要

核反应堆容器的流激振动在反应堆容器的机械设计中得到了广泛的研究。许多电厂对耦合的现代流体和固体力学代码越来越感兴趣,以促进对称为流固相互作用(FSI)的部件损坏现象的理解。更好地了解这些结构之间的相互作用对于提高安全性、最大限度地减少辐射风险、改善公众健康和安全以及促进核工业的创新至关重要。此外,它支持核能作为化石燃料的清洁替代品,有助于减少全球碳排放,促进负责任的生产和消费。压力波传播、声共振、流致湍流和流体弹性不稳定性是本研究中研究的四种类型的fsi耦合系统。提出了不同的计算方法来模拟FSI问题,并应根据问题的物理复杂性来选择。将计算流体力学(CFD)或热力学结果应用于结构模型的单向流固耦合计算是常见的,而随着计算机容量的增加和更具成本效益的湍流模型的发展,采用迭代流固耦合模拟的流固耦合计算将越来越多。大多数建模结果与实验数据误差在±10%范围内;然而,在某些情况下,选择不同的边界条件会导致高达30%的误差。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Computational Methods and Representative Cases for Fluid–Structure Interaction in Nuclear Reactor Vessel and Internals

Computational Methods and Representative Cases for Fluid–Structure Interaction in Nuclear Reactor Vessel and Internals

Flow-induced vibration (FIV) in nuclear reactor vessels has been extensively studied during the mechanical design of reactor vessels. Many power plants have increased the interest in coupled modern fluid and solid mechanics codes to facilitate the understanding of the phenomena causing damage to components termed fluid–structure interaction (FSI). A better understanding of these structure interactions is critical for enhancing safety, minimizing radiation risks, improving public health and safety, and fostering innovation in the nuclear industry. Furthermore, it supports nuclear energy as a clean alternative to fossil fuels, contributing to the reduction of global carbon emissions and advancing responsible production and consumption. Pressure wave propagation, acoustic resonance, flow-induced turbulence, and fluid-elastic instability are the four types of FSI-coupled systems that are investigated in this work. Different computational methods are presented to simulate FSI problems and should be selected depending on the physical complexity of the problems. One-way FSI where Computational Fluid Dynamics (CFD) or thermal-hydraulics results are applied on a structural model is common, while FSI calculations with iterative fluid–structure simulations will be more and more available with the increase in computer capacity and the development of a more cost-effective turbulence model. Most modeling results have resulted in errors in the range of ± 10% with the experimental data; however, in some cases, the choice of a different boundary condition has been shown to result in up to 30% errors.

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来源期刊
Arabian Journal for Science and Engineering
Arabian Journal for Science and Engineering MULTIDISCIPLINARY SCIENCES-
CiteScore
5.70
自引率
3.40%
发文量
993
期刊介绍: King Fahd University of Petroleum & Minerals (KFUPM) partnered with Springer to publish the Arabian Journal for Science and Engineering (AJSE). AJSE, which has been published by KFUPM since 1975, is a recognized national, regional and international journal that provides a great opportunity for the dissemination of research advances from the Kingdom of Saudi Arabia, MENA and the world.
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