Contact phenomena between load-bearing skeletons of bowed fuel assemblies in PWRs with mixed cores

IF 3.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Progress in Nuclear Energy Pub Date : 2024-11-16 DOI:10.1016/j.pnucene.2024.105519

V. Zeman, Z. Hlaváč, Š. Dyk

引用次数: 0

Abstract

The paper presents a comprehensive method for modelling contact interactions between two different types of fuel assemblies within a mixed core. Particular emphasis is placed on the hexagonal fuel assemblies commonly found in VVER reactors. The presence of bowed fuel assemblies may induce mutual contact, resulting in temporary or permanent contact conditions. This interaction, in conjunction with the vibration of core components, can lead to fretting wear of the load-bearing skeletons of fuel assemblies. By using the proposed computational model and experimentally estimated fretting wear parameters, the method allows detailed analysis of fretting wear as a function of various factors. These factors include operating conditions, distribution of fuel assembly types within the mixed core, burn-up state of contacting assemblies and the shape of their static deformation.

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混合堆芯压水堆中弓形燃料组件承重骨架之间的接触现象

本文介绍了一种用于模拟混合堆芯内两种不同类型燃料组件之间接触相互作用的综合方法。其中特别强调了 VVER 反应堆中常见的六边形燃料组件。弓形燃料组件的存在可能会引起相互接触，导致暂时或永久的接触条件。这种相互作用与堆芯部件的振动一起，会导致燃料组件承重骨架的摩擦磨损。通过使用提出的计算模型和实验估算的摩擦磨损参数，该方法可以详细分析摩擦磨损与各种因素的关系。这些因素包括运行条件、混合堆芯内燃料组件类型的分布、接触组件的烧损状态及其静态变形形状。

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

Progress in Nuclear Energy 工程技术-核科学技术

CiteScore

5.30

自引率

14.80%

发文量

331

审稿时长

3.5 months

期刊介绍： Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field. Please note the following: 1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy. 2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc. 3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.