Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Influence of Input Parameters on Shock Wave Propagation in Quasi-3D Hydrodynamic Model

준3차원 동수역학 모형의 입력변수가 충격파 전파에 미치는 영향

  • 이동섭 (한국건설기술연구원 하천.해안연구실) ;
  • 김형준 (한국건설기술연구원 하천.해안연구실) ;
  • 송창근 (인천대학교 안전공학과)
  • Received : 2016.11.08
  • Accepted : 2017.03.09
  • Published : 2017.04.30
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Abstract

Present study investigated the influence of time step size, turbulent eddy viscosity, and the number of layer on rapid and unsteady propagation of dam break flow. When the time step size had a value such that it resulted in Cr of 0.89, a significant numerical oscillation was observed in the vicinity of the wave front. Higher turbulent viscosity ensured smooth and mild slope of velocity and water stage compared with the flow behavior by no viscosity. The vertical velocity at the lower layer positioned near the bottom showed lower velocity compared with other layers.

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References

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