Evaluation of Single-phase and Two-phase Mixing Models for Rod Bundle Channel

Ye Tingpu; Lyu Lulu; Zhang Ge; He Hui; Cheng Cheng

doi:10.13832/j.jnpe.2022.02.0047

Volume 43 Issue 2

Apr. 2022

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Ye Tingpu, Lyu Lulu, Zhang Ge, He Hui, Cheng Cheng. Evaluation of Single-phase and Two-phase Mixing Models for Rod Bundle Channel[J]. Nuclear Power Engineering, 2022, 43(2): 47-52. doi: 10.13832/j.jnpe.2022.02.0047

Citation:

Ye Tingpu, Lyu Lulu, Zhang Ge, He Hui, Cheng Cheng. Evaluation of Single-phase and Two-phase Mixing Models for Rod Bundle Channel[J]. Nuclear Power Engineering, 2022, 43(2): 47-52. doi: 10.13832/j.jnpe.2022.02.0047

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Evaluation of Single-phase and Two-phase Mixing Models for Rod Bundle Channel

doi: 10.13832/j.jnpe.2022.02.0047

Ye Tingpu^1
,,
Lyu Lulu¹,
Zhang Ge^{1
,
,},
He Hui²,
Cheng Cheng¹

1.
China Nuclear Power Technology Research Institute Co., Ltd, Shenzhen, Guangdong, 518026, China
2.
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

Received Date: 2021-02-09
Accepted Date: 2021-02-09
Rev Recd Date: 2021-05-29
Publish Date: 2022-04-02

Abstract

Abstract

In this study, the subchannel program is used to evaluate the single-phase and two-phase mixing model of the rod bundle channel based on the existing experimental data. The single-phase mixing mainly considers the cross flow and turbulent mixing. The cross flow is determined by the conservation equation and plays a leading role in the flow distribution. The turbulent mixing depends on the mixing coefficient. It is found that the prediction results of Sadatomi model are in good agreement with the experimental results in the study of turbulent mixing. Two-phase mixing is jointly caused by cross flow, turbulent mixing and void drift. Through the comparative analysis of the prediction results of the existing models and the experimental data, it is recommended to use the Hotta model for the void drift in the two-phase mixing, the Sadatomi model for the turbulent mixing coefficient, and the Beus model for the two-phase multiplier. This is a combined model with conservative prediction results, which is conducive to the conservative evaluation of reactor safety.
- Rod bundle channel,
- Mixing model,
- Void drift,
- Mixing coefficient,
- Two-phase multiplier

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References(14)

References

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