摘要
针对压水堆核电子通道软件中换热模型和氧化关系式对提高堆芯安全性和国产化软件模拟预测准确性的急迫需求,采用数值模拟技术在COSINE软件包子通道软件中分析换热模型和氧化关系式,并运用实验数据研究了不同理论关系式对沸腾换热性能和氧化量的影响。结果表明,该软件具有模拟棒束内临界前后换热模型的能力,其模拟结果和实验值吻合良好。在过热度小于4K前,MAX模型计算核态沸腾适用性较好;在过热度大于4 K后,PLUS模型适用性较好。Dougall-Rohsenow模型计算膜态沸腾适用性较好。Baker-Juster模型在温度低于1374K前,略微高估氧化量;在温度高于1374K后,低估氧化量。
In view of the urgent need of heat transfer model and oxidation relationships in pressurized water reactor nuclear subchannel software to improve the core safety and the accuracy of simulation and prediction of domestic software,we used numerical simulation technology to analyze the heat transfer model and oxidation relationships in COSINE subchannel software,and used experimental data to study the influence of different theoretical relationships on boiling heat transfer performance and oxidation amount.The results indicate that the software has the ability to simulate the heat transfer before and after the criticality in the rod bundle,and the simulation results are in good agreement with the experimental values.Before the superheat degree is less than 4 K,the MAX model is suitable for calculating nucleate boiling.When the superheat degree is greater than 4 K,the PLUS model has good applicability.Dougall-Rohsenow model is suitable for calculating film boiling.Baker-Juster model slightly overestimated the oxidation amount before the temperature was lower than 1374 K;When the temperature is higher than 1374 K,the oxidation amount is underestimated.
作者
程以炫
孟召灿
张昊
章艺林
赵萌
杨燕华
Cheng Yixuan;Meng Zhaocan;Zhang Hao;Zhang Yilin;Zhao Meng;Yang Yanhua(College of Smart Energy,Shanghai Jiao Tong University,Shanghai,200240,China;State Power Investment Corporation Research Institute,Beijing,102209,China;School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2024年第4期127-133,共7页
Nuclear Power Engineering
基金
国防科工局核能开发项目。
关键词
子通道
COSINE软件包
壁面换热
氧化量
适应性
Subchannel
COSINE software package
Wall heat transfer
Oxidation amount
Adaptability