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In this paper, experiments on the erosion and mixing of stable helium stratification were conducted on the CABLE test facility. Additionally, a GOTHIC 3D model was developed for the CABLE test facility, and five different turbulence models were used to simulate the formation of the stable helium layer as well as the erosion and mixing phenomena. The results from these turbulence models were compared with the experimental data. To refine the turbulence model settings, further investigation was conducted on the effects of vapor Turbulent Prandtl and vapor Turbulent Schmidt numbers on the simulation results. Recommendations were provided for selecting the turbulence models in the GOTHIC code, which are used to simulate the formation of the stable helium layer and the erosion and mixing phenomena in the CABLE test facility. Furthermore, to enhance simulation accuracy, a methodology was proposed for adjusting the vapor Turbulent Schmidt and vapor Turbulent Prandtl numbers within the turbulence models, thereby optimizing the representation of gas molecular diffusion effects.

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Analysis on the Erosion and Mixing of Stable Helium Stratification by Vertical Air Jet on Cable Facility Using Gothic 3d Model

  • 会议论文

  • 发表日期：

    2026年

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  • Ningxi Jia,
  • Xiaochuan Wang,
  • Zhuo Liu,
  • Mingrui Yu,
  • Yidan Yuan

摘要

In this paper, experiments on the erosion and mixing of stable helium stratification were conducted on the CABLE test facility. Additionally, a GOTHIC 3D model was developed for the CABLE test facility, and five different turbulence models were used to simulate the formation of the stable helium layer as well as the erosion and mixing phenomena. The results from these turbulence models were compared with the experimental data. To refine the turbulence model settings, further investigation was conducted on the effects of vapor Turbulent Prandtl and vapor Turbulent Schmidt numbers on the simulation results. Recommendations were provided for selecting the turbulence models in the GOTHIC code, which are used to simulate the formation of the stable helium layer and the erosion and mixing phenomena in the CABLE test facility. Furthermore, to enhance simulation accuracy, a methodology was proposed for adjusting the vapor Turbulent Schmidt and vapor Turbulent Prandtl numbers within the turbulence models, thereby optimizing the representation of gas molecular diffusion effects.