Optimization of Turbulent Prandtl Numbers and RANS Models for Liquid Lead-bismuth Eutectic

Deng Shiyu; Lu Tao; Deng Jian; Zhang Xilin; Zhu Dahuan

doi:10.13832/j.jnpe.2023.02.0098

Volume 44 Issue 2

Apr. 2023

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Article Navigation > Nuclear Power Engineering > 2023 > 44(2): 98-103

Deng Shiyu, Lu Tao, Deng Jian, Zhang Xilin, Zhu Dahuan. Optimization of Turbulent Prandtl Numbers and RANS Models for Liquid Lead-bismuth Eutectic[J]. Nuclear Power Engineering, 2023, 44(2): 98-103. doi: 10.13832/j.jnpe.2023.02.0098

Citation:

Deng Shiyu, Lu Tao, Deng Jian, Zhang Xilin, Zhu Dahuan. Optimization of Turbulent Prandtl Numbers and RANS Models for Liquid Lead-bismuth Eutectic[J]. Nuclear Power Engineering, 2023, 44(2): 98-103. doi: 10.13832/j.jnpe.2023.02.0098

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Optimization of Turbulent Prandtl Numbers and RANS Models for Liquid Lead-bismuth Eutectic

doi: 10.13832/j.jnpe.2023.02.0098

1.
School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
2.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2022-04-08
Rev Recd Date: 2022-05-19
Publish Date: 2023-04-15

Abstract

Abstract

In the engineering field, the RANS turbulence models are often used for thermal and hydraulic numerical simulation. However, the liquid lead-bismuth eutectic (LBE) has unique thermophysical properties, and the applicability of conventional turbulent Prandtl number models and RANS turbulence models to its flow and heat transfer simulation needs to be studied. In order to more accurately describe the flow and heat transfer process of LBE in wire-wrapped fuel assembly, the turbulent Prandtl number models and RANS turbulence models are optimized in this paper based on the large eddy simulation. First, four different turbulent Prandtl number models are used to carry out the large eddy simulation of the flow and heat transfer process of LBE in wire-wrapped fuel assembly, and the experimental data and simulation results are compared and analyzed to optimize these models. Then, based on the optimized turbulent Prandtl number model, the applicability and accuracy of the RANS turbulence models to the numerical simulation of LBE are evaluated. The results show that Cheng's turbulent Prandtl number model and SST k-ω model have the highest accuracy and applicability to the simulation of flow and heat transfer of LBE.
- Liquid lead-bismuth eutectic (LBE),
- Large eddy simulation,
- Turbulent Prandtl number model,
- RANS turbulence model,
- Wire-wrapped fuel assembly

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References(14)

References

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