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Simulation study on thermal performance of two turns helium cryogenic oscillating heat pipe for superconducting accelerator

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Abstract

Purpose

In recent years, with the further development of superconducting technology, superconducting devices have been applied in particle accelerators and synchrotron radiation light source devices. As a new type of heat transfer structure, helium cryogenic oscillating heat pipe can be used to balance local hot spots in superconductors and improve heat transfer performance.

Methods

In this paper, a two- dimensional two-turns helium cryogenic oscillating heat pipe model is established. The flow performance of helium cryogenic oscillating heat pipe was analyzed by CFD simulation.

Results and conclusion

The results show that the development of flow pattern in the helium cryogenic oscillating heat pipe first forms bubble flow under the heating of the evaporation section, and then gradually forms slug flow and annular flow. The process consists of initial stage, transition stage and running stage. In the running stage, the effective thermal conductivity of COHP oscillates around 15,000 W/(m·K).

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Abbreviations

F :

Wall friction (N/m2)

G :

Mass source term due to phase change (kg/m3·s)

α :

Volume fraction (−)

ρ :

Density (kg/m3)

con:

Condensation

eva:

Evaporation

g :

Gas

l :

Liquid

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Acknowledgements

This work was supported by National Natural Science Foundation of China (No. 11905233).

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Authors and Affiliations

  1. University of Chinese Academy of Sciences, Beijing, China

    Yi Huo

  2. Institute of High Energy Physics, Beijing, China

    Yi Huo, Changcheng Ma & Rui Ge

  3. Hefei University of Technology, Hefei, China

    Jun Zhang & Rui Huang

Authors
  1. Yi Huo
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  2. Changcheng Ma
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  3. Jun Zhang
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Correspondence to Yi Huo.

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Huo, Y., Ma, C., Zhang, J. et al. Simulation study on thermal performance of two turns helium cryogenic oscillating heat pipe for superconducting accelerator. Radiat Detect Technol Methods 7, 427–434 (2023). https://doi.org/10.1007/s41605-023-00403-2

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  • DOI: https://doi.org/10.1007/s41605-023-00403-2

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