Verification of COSINE Reflooding Model and Sensitivity Analysis of Parameters

Li Xuelin; Zhang Hao; Yang Yanhua

doi:10.13832/j.jnpe.2022.06.0073

Volume 43 Issue 6

Dec. 2022

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Li Xuelin, Zhang Hao, Yang Yanhua. Verification of COSINE Reflooding Model and Sensitivity Analysis of Parameters[J]. Nuclear Power Engineering, 2022, 43(6): 73-78. doi: 10.13832/j.jnpe.2022.06.0073

Citation:

Li Xuelin, Zhang Hao, Yang Yanhua. Verification of COSINE Reflooding Model and Sensitivity Analysis of Parameters[J]. Nuclear Power Engineering, 2022, 43(6): 73-78. doi: 10.13832/j.jnpe.2022.06.0073

Li Xuelin, Zhang Hao, Yang Yanhua. Verification of COSINE Reflooding Model and Sensitivity Analysis of Parameters[J]. Nuclear Power Engineering, 2022, 43(6): 73-78. doi: 10.13832/j.jnpe.2022.06.0073

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Verification of COSINE Reflooding Model and Sensitivity Analysis of Parameters

doi: 10.13832/j.jnpe.2022.06.0073

School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China

Received Date: 2021-11-08
Rev Recd Date: 2021-12-08
Publish Date: 2022-12-14

Abstract

Abstract

Reflooding is an important stage after the PWR large break accident. In order to evaluate the calculation capability of the system program at this stage, it is necessary to select a variety of heat transfer models to reproduce the accident and analyze the sensitivity response of the parameters. In this paper, the PWR Loss of Fluid Test (LOFT) bench is modeled, and the calculation results of different heat transfer models in the COSINE program are compared with the experimental data to verify the accuracy of the model; At the same time, the parameter sensitivity calculation in the reflooding stage is carried out, and the parameters which have the greatest influence on the second peak cladding temperature (PCT) are identified. The calculation shows that the heat transfer model of COSINE program can well predict the reflooding phenomenon, and the sensitivity parameters that have great influence on the calculation results include UO₂ volume heat capacity, droplet diameter, droplet interphase heat transfer coefficient and heat transfer coefficient of film boiling wall against vapor phase.
- Reflooding,
- Sensitivity analysis,
- COSINE,
- LOFT experiment

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References(16)

References

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