数值结构分析和流动诱发振动研究,支持用于 STEAM 实验设施的 EU-DEMO 直通式蒸汽发生器模型的设计

IF 1.9 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY
I. Catanzaro , G. Bongiovì , S. Giambrone , A. Gioè , P. Arena , A. Del Nevo , M. Eboli , S. Basile , R. Burlon , P. Chiovaro , P.A. Di Maio , M. Giardina , A. Quartararo , E. Tomarchio , E. Vallone
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引用次数: 0

摘要

ENEA作为EUROfusion财团的一部分,正在努力实现STEAM,这是一个集成到水冷铅锂-热-HYDRAulic(W-HYDRA)平台的实验设施,设想在聚变反应堆的不同运行阶段对EU-DEMO蒸汽发生器进行鉴定。其目的是测试和鉴定水冷铅锂育种毯(WCLL BB)一次热传输系统(PHTS)所采用的技术解决方案。特别是,将在 STEAM 内设计、安装和测试用于 DEMO WCLL BB 初级热传输系统的模拟一次蒸汽发生器(OTSG)。为此,巴勒莫大学与 ENEA Brasimone 密切合作,进行了一系列数值结构分析和初步的流动振动研究。首先,进行了管道应力分析,重点是连接 STEAM 设备和增压器的增压管线的结构性能,研究在额定运行条件下产生的应力和位移,以便提出适当的设计修改建议。其次,为了研究 DEMO OTSG 模型在名义运行情况下的结构性能,进行了三维稳态热机械有限元分析。分析结果有助于根据所采用的结构设计规范选择最关键的区域。最后,为了初步评估 DEMO OTSG 模型管内可能出现的振动引发的问题,我们采用文献中的公式进行了初步分析研究。研究的范围是确定是否可以合理地排除管道中的振动诱发问题,或者这些问题是否可能成为需要进一步评估的实际问题。提供了模型、假设和结果,并对其进行了批判性讨论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical structural analysis and flow-induced vibration study in support of the design of the EU-DEMO once-through steam generator mock-up for the STEAM experimental facility
ENEA, as part of the EUROfusion consortium, is working at the realization of STEAM, an experimental facility integrated into the Water-cooled lithium lead-thermal-HYDRAulic (W-HYDRA) platform, envisaged for the qualification of the EU-DEMO steam generator during the different operational phases of a fusion reactor. It will aim at testing and qualifying the technological solutions to be adopted for the Primary Heat Transport System (PHTS) of the Water-Cooled Lead Lithium Breeding Blanket (WCLL BB). In particular, a mock-up of the Once-Through Steam Generator (OTSG) foreseen for the PHTS of the DEMO WCLL BB will be designed, installed and tested within STEAM. In this regard, a campaign of numerical structural analyses and a preliminary flow-induced vibration study have been carried out at the University of Palermo, in close collaboration with ENEA Brasimone. Firstly, a pipe stress analysis has been conducted focussing on the structural performances of the surge line devoted to connecting the STEAM facility to the pressurizer, looking at the stress and displacement arising under the nominal operating conditions so to propose proper design modifications. Secondly, in order to investigate the structural performances of the DEMO OTSG mock-up in the envisaged nominal operating scenario, a 3D steady-state thermo-mechanical FEM analysis has been carried out. The outcomes have allowed selecting the most critical regions in view of the adopted structural design code. Lastly, in order to preliminarily assess the potential onset of vibration-induced issues within the tubes of the DEMO OTSG mock-up, a preliminary analytical study has been carried out adopting formulae available in literature. The scope has been to establish if vibration-induced issues in the tubes can be reasonably excluded or if they could represent a tangible concern, to be further assessed. Models, assumptions and outcomes are provided and critically discussed.
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来源期刊
Fusion Engineering and Design
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.
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