CFD Analysis on Characteristics of High Temperature Heat Pipe

Yu Qingyuan; Zhao Pengcheng; Ma Yugao

doi:10.13832/j.jnpe.2022.02.0070

Volume 43 Issue 2

Apr. 2022

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Yu Qingyuan, Zhao Pengcheng, Ma Yugao. CFD Analysis on Characteristics of High Temperature Heat Pipe[J]. Nuclear Power Engineering, 2022, 43(2): 70-76. doi: 10.13832/j.jnpe.2022.02.0070

Citation:

Yu Qingyuan, Zhao Pengcheng, Ma Yugao. CFD Analysis on Characteristics of High Temperature Heat Pipe[J]. Nuclear Power Engineering, 2022, 43(2): 70-76. doi: 10.13832/j.jnpe.2022.02.0070

Yu Qingyuan, Zhao Pengcheng, Ma Yugao. CFD Analysis on Characteristics of High Temperature Heat Pipe[J]. Nuclear Power Engineering, 2022, 43(2): 70-76. doi: 10.13832/j.jnpe.2022.02.0070

Citation:

Yu Qingyuan, Zhao Pengcheng, Ma Yugao. CFD Analysis on Characteristics of High Temperature Heat Pipe[J]. Nuclear Power Engineering, 2022, 43(2): 70-76. doi: 10.13832/j.jnpe.2022.02.0070

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CFD Analysis on Characteristics of High Temperature Heat Pipe

doi: 10.13832/j.jnpe.2022.02.0070

1.
School of Nuclear Science and Technology, University of South China, Hengyang, Hunan, 421001, China
2.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-09-10
Accepted Date: 2022-01-10
Rev Recd Date: 2021-12-29
Publish Date: 2022-04-02

Abstract

Abstract

The analysis and prediction of the operating characteristics of high temperature heat pipe are of great significance to the design and application of heat pipe. In order to analyze the heat transfer characteristics of two-phase flow in high temperature heat pipe, first, the computational fluid dynamics (CFD) analysis model of sodium heat pipe is established, and the calculated values of the model are compared with the steady-state experimental data of sodium heat pipe. The absolute error between the simulation results and the temperature of the experimental measuring point is less than 40℃, and the relative error is within 5%; Second, the flow field characteristics of heat pipe under different heat transfer power and inclination angle are analyzed and studied by using the model and method in this paper. The results show that under the condition of uniform heating, the velocity in the steam chamber changes nearly linearly in the evaporation section, while in the condensation section, the decrease of gas velocity leads to the rise of pressure. At the same time, the flow pressure drop and velocity of steam decrease with the increase of heating power; Under the horizontal and inclined operating conditions of heat pipe, the liquid phase pressure drop is dominant in the two-phase flow pressure drop in heat pipe; in the gas-liquid shear effect, the gas flow velocity is the dominant effect. The model presented in this paper can provide heat pipe design and analysis methods for high temperature heat pipe applications such as heat pipe reactor.
- High temperature heat pipe,
- Computational Fluid Dynamics (CFD),
- Temperature field,
- Two-phase flow field

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References(24)

References

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