This study establishes a transient CFD and coupled CFD-thermal analysis method for evaluating the insulation performance of a liquid hydrogen control valve system incorporating an MLI-VCS-MLI configuration. Parametric analysis was conducted by varying the thickness of MLI 2 (50–200 mm) to assess its impact on the temperature distribution and heat flux within the valve body and insulation layers. The results indicate that increasing the thickness of MLI 2 significantly reduces heat flux and improves insulation effectiveness, with the highest heat flux occurring at the outermost MLI layer exposed to ambient conditions. These findings provide valuable insights for optimizing insulation design in liquid hydrogen storage and transport systems, contributing to enhanced thermal management and energy efficiency.

Abstract
1. 서 론
2. 컨트롤 밸브의 유한요소해석
    2.1 Analysis model and CFX-Pre
    2.2 Result of CFD
    2.3 CFD-thermal analysis
3. Parametric study
    3.1 Parameter set
    3.2 Result of parametric study
4. 결 론
후 기
References

• 곽효서(Assistant professor, Mechanical Engineering Major, Dong-Eui University) | Hyo-seo Kwak Corresponding author