Development and Validation of a Four-Parameter SST k-ω-kθ-εθ Model for LBE Flow and Heat Transfer

Wu Jie; Su Xingkang; Cai Jiejin; Gong Ziqi; Gu Long

doi:10.13832/j.jnpe.2025.01.0100

Volume 46 Issue 1

Feb. 2025

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Wu Jie, Su Xingkang, Cai Jiejin, Gong Ziqi, Gu Long. Development and Validation of a Four-Parameter SST k-ω-kθ-εθ Model for LBE Flow and Heat Transfer[J]. Nuclear Power Engineering, 2025, 46(1): 100-106. doi: 10.13832/j.jnpe.2025.01.0100

Citation:

Wu Jie, Su Xingkang, Cai Jiejin, Gong Ziqi, Gu Long. Development and Validation of a Four-Parameter SST k-ω-k_θ-ε_θ Model for LBE Flow and Heat Transfer[J]. Nuclear Power Engineering, 2025, 46(1): 100-106. doi: 10.13832/j.jnpe.2025.01.0100

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Development and Validation of a Four-Parameter SST k-ω-k_θ-ε_θ Model for LBE Flow and Heat Transfer

doi: 10.13832/j.jnpe.2025.01.0100

Wu Jie^1
,,
Su Xingkang²,
Cai Jiejin^{1
,
,},
Gong Ziqi¹,
Gu Long²

1.
School of Electric Power Engineering, South China University of Technology, Guangzhou, 510640, China
2.
School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China

Received Date: 2024-03-12
Rev Recd Date: 2024-05-05
Publish Date: 2025-02-15

Abstract

Abstract

In order to solve the problem of numerical heat transfer computation for extremely low-Prandtl-number fluids and to improve the computational accuracy of the numerical simulation of liquid lead-bismuth eutectic (LBE), a four-parameter SST k-ω-k_θ-ε_θ model for the Reynolds stress and turbulent heat flux is developed under the framework of OpenFOAM. Based on benchmark flow and heat transfer experiments of LBE in a vertical pipe and wire-wrapped 19-rod bundle, a comparison and thermal-hydraulic analysis were conducted against the turbulent Prandtl number (Pr_t) model using relevant empirical Nusselt number and friction factor correlations. The results show that the temperature predicted by the four-parameter SST k-ω-k_θ-ε_θ model agrees well with the experimental data, and the heat transfer prediction performance is better than that of the Pr_t model. The model is suitable for the numerical computation of LBE flow and heat transfer.
- Four-parameter model,
- OpenFOAM,
- Lead-bismuth eutectic (LBE),
- Flow and heat transfer

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References(19)

References

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