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首页> 外文会议>International topical meeting on advances in thermal hydraulics;American Nuclear Society meeting >DEVELOPMENT AND VERIFICATION OF POST-CHF HEAT TRANSFER MODEL BASED ON 10CFR50 APPENDLX K IN COSINE
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DEVELOPMENT AND VERIFICATION OF POST-CHF HEAT TRANSFER MODEL BASED ON 10CFR50 APPENDLX K IN COSINE

机译：基于余弦的10CFR50附录K的CHF后传热模型的开发和验证

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摘要

COSINE is a self-reliant development code package of China which is a core and system integrated engine used for NPP's design and analysis. cosCSLOCA is a sub-program among the thermal hydraulic design and safety analysis codes in COSINE software package. It is applicable to analyze the loss of coolant accidents(LOCA) in nuclear power plants and use the conservative models recommended in appendix K of NRC 10cfr50.46. And cosBELOCA is the loss of coolant accident best estimation analysis code which is also included in COSINE . The Post-CHF heat transfer is an important phenomenon to predict the peak cladding temperature during a LOCA. This paper listed the correlations of Post-CHF heat transfer adopted in these two codes and introduced the flowchart of development in cosCSLOCA. In addition, the ORNL THTF tests have been used for the verification of the Post-CHF models in both cosCSLOCA and cosBELOCA. Comparisons are made between the experimental results, the results calculated by relap5/3.3, cosCSLOCA and cosBELOCA. The results show that the results of the three codes had the same trend with experiment, and the calculated cladding temperatures using cosCSLOCA are higher than cosBELOCA and relap5/3.3.Through the separate effect assessments, the conservative of the post-CHF heat transfer model in cosCSLOCA were verified.
机译：COSINE是中国的自力更生开发代码包，是用于NPP设计和分析的核心和系统集成引擎。 cosCSLOCA是COSINE软件包中热液压设计和安全分析代码之间的子程序。它适用于分析核电厂中冷却剂事故的损失（LOCA），并使用NRC 10cfr50.46附录K中推荐的保守模型。 cosBELOCA是冷却液损失最佳估计分析代码，该代码也包含在COSINE中。 CHF后的传热是预测LOCA期间峰值熔覆温度的重要现象。本文列出了这两个代码中采用的后CHF换热的相关性，并介绍了cosCSLOCA的开发流程图。此外，ORNL THTF测试已用于验证cosCSLOCA和cosBELOCA中的CHF后模型。实验结果之间进行了比较，结果由relap5 / 3.3，cosCSLOCA和cosBELOCA计算得出。结果表明，这三个代码的结果与实验趋势相同，并且使用cosCSLOCA计算的包层温度高于cosBELOCA和relap5 / 3.3。 cosCSLOCA已验证。

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