한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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THE NUMERICAL SIMULATION OF HYDROGEN JET DIFFUSION FOR HYDROGEN LEAKAGE IN THE ENCLOSED GEOMETRY

밀폐공간에서 수소 누설로 인한 수소 제트 확산에 대한 수치해석

  • 안혁진 (서강대학교 대학원) ;
  • 이상혁 (서강대학교 대학원) ;
  • 허남건 (서강대학교 기계공학과) ;
  • 이문규 (교통안전공단 자동차성능연구소) ;
  • 용기중 (교통안전공단 자동차성능연구소)
  • Published : 2009.04.24
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Abstract

In the present study, a numerical simulation for the diffusion of hydrogen jet in a enclosure was performed to aid the leakage test of the hydrogen for the safety of the hydrogen vehicle. The temporal and spatial distributions of the hydrogen concentration in the test chamber are predicted from the present numerical analyses. Flammable region of 4-74% and explosive region of 18-59% hydrogen by volume was identified from the present results. Factors influencing the diffusion of the hydrogen jet were examined to evaluate the effectiveness of forced ventilation for relieving the accumulation of the leaked hydrogen gas in the chamber, which include location of open windows, size of leakage nozzle, and leakage rate among others. The distribution of the concentration of the leaked hydrogen for various cases can be used as a database in various applications for the hydrogen safety.

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