Multiphysics Analysis of UN Fuel Performance With a Two-Layered SiC Cladding Under Multiple Operating Conditions in a Light Water Reactor

Rong Liu, Huiyun Han, S. Liu
{"title":"Multiphysics Analysis of UN Fuel Performance With a Two-Layered SiC Cladding Under Multiple Operating Conditions in a Light Water Reactor","authors":"Rong Liu, Huiyun Han, S. Liu","doi":"10.1115/icone29-91980","DOIUrl":null,"url":null,"abstract":"\n In recent years, UN fuels have emerged as potential alternatives to UO2 fuels, due to its superior thermophysical properties, such as high thermal conductivity, melting point and fission density. And SiC is considered as one of the new generations of accident-tolerant cladding materials because of its excellent high temperature strength, creep resistance, lower thermal expansion and better irradiation performance. In this paper, the thermal and mechanical properties of the two-layered SiC cladding and UN fuel are reviewed. Then, based on the developed fuel performance analysis code CAMPUS, the multiphysics models of two-layered SiC cladding and UN fuel are implemented into the CAMPUS code. After that, the fuel performance of three fuel cladding systems, UN-two-layered SiC cladding, UN-Zircaloy cladding and UO2-Zircaloy cladding, are simulated and analyzed under both normal operating and accident conditions of PWR.\n Our calculation results show that using UN fuel can significantly reduce the maximum temperature of the fuel under LOCA condition, resulting in a significant delay in cladding failure time. Thus, the safety margin of the reactor can be improved. After the two-layered SiC cladding is further assembled, the failure time of fuel rod under accident condition is found to be effectively delayed due to better mechanical properties of SiC.","PeriodicalId":302303,"journal":{"name":"Volume 15: Student Paper Competition","volume":"28 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Volume 15: Student Paper Competition","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/icone29-91980","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

In recent years, UN fuels have emerged as potential alternatives to UO2 fuels, due to its superior thermophysical properties, such as high thermal conductivity, melting point and fission density. And SiC is considered as one of the new generations of accident-tolerant cladding materials because of its excellent high temperature strength, creep resistance, lower thermal expansion and better irradiation performance. In this paper, the thermal and mechanical properties of the two-layered SiC cladding and UN fuel are reviewed. Then, based on the developed fuel performance analysis code CAMPUS, the multiphysics models of two-layered SiC cladding and UN fuel are implemented into the CAMPUS code. After that, the fuel performance of three fuel cladding systems, UN-two-layered SiC cladding, UN-Zircaloy cladding and UO2-Zircaloy cladding, are simulated and analyzed under both normal operating and accident conditions of PWR. Our calculation results show that using UN fuel can significantly reduce the maximum temperature of the fuel under LOCA condition, resulting in a significant delay in cladding failure time. Thus, the safety margin of the reactor can be improved. After the two-layered SiC cladding is further assembled, the failure time of fuel rod under accident condition is found to be effectively delayed due to better mechanical properties of SiC.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
轻水堆复合工况下双层SiC包层UN燃料性能多物理场分析
近年来,由于其优越的热物理特性,如高导热性、熔点和裂变密度,UN燃料已成为UO2燃料的潜在替代品。碳化硅具有优异的高温强度、抗蠕变性能、较低的热膨胀率和较好的辐照性能,被认为是新一代的耐事故熔覆材料之一。本文综述了两层碳化硅包层和UN燃料的热力学性能。然后,基于开发的燃料性能分析程序CAMPUS,将两层SiC包层和UN燃料的多物理场模型实现到CAMPUS程序中。在此基础上,对un -双层SiC包壳、un -锆合金包壳和uo2 -锆合金包壳三种燃料包壳系统在压水堆正常运行和事故工况下的燃料性能进行了仿真分析。计算结果表明,使用UN燃料可以显著降低燃料在LOCA工况下的最高温度,从而显著延迟包壳失效时间。从而提高反应堆的安全裕度。进一步组装双层SiC包层后,由于SiC具有较好的力学性能,有效延缓了燃料棒在事故工况下的失效时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
自引率
0.00%
发文量
0
期刊最新文献
Research on Generalization of Typical Data-Driven Fault Diagnosis Methods for Nuclear Power Plants Heat Transfer Characteristics of Different Horizontal Wires in Pools of Liquid and Supercritical Carbon Dioxide Specifics of Calculating Thermophysical Properties of CO2 and R134a in Critical Point Using NIST REFPROP Radiation Shielding Towards Commonly Available Objects Preliminary Core Calculation on Reactivity Compensation for SiC Matrix Fuel Compact HTTR With Erbium Burnable Poison and Plutonium Fissile Material
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1