Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Study on Numerical Model of Leakage Flow at Gap between Compartments in a Building

건축물 구획실간 틈새에서의 누설유동에 대한 수치모델 연구

  • Kim, Jung-Yup (Fire Research Center, Korea Institute of Construction Technology) ;
  • Kim, Ji-Seok (Fire Research Center, Korea Institute of Construction Technology)
  • 김정엽 (한국건설기술연구원 화재안전연구센터) ;
  • 김지석 (한국건설기술연구원 화재안전연구센터)
  • Received : 2013.07.03
  • Published : 2013.10.10
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Abstract

1D-numerical analysis of the network algorithm with the orifice equation for the relationship between pressure difference and flowrate has been mostly used to analyse leakage flow at the gap. In this study, a 3D-numerical method applying momentum loss model to the gap region in the computational domain is represented to reflect effectively the effect of leakage flow by determining the proportion of pressure difference to air passage velocity. While the 3D-numerical method is verified through the computation of the two compartments model, the numerical analysis of the stack effect in a building stairway is performed. As the temperature of air outside drops, the pressure in the upper stairway and leakage flowrate through the gap in the door rise. The change of gap area does not have an effect on pressure in the stairway for the analysis conditions.

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References

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Cited by

  1. Study on 3D Numerical Analysis of Stack Effect Reduction in Stairwell of Building vol.27, pp.3, 2015, https://doi.org/10.6110/KJACR.2015.27.3.152