Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Levee Breach Flow by Experiment and Numerical Simulation

수리실험 및 수치모의를 이용한 제방붕괴 흐름해석

  • Kim, Joo-Young (Environmental Technology Dept., KEPCO Engineering & Construction Company, Inc.) ;
  • Lee, Jong-Kyu (Dept. of Civil and Env. Eng., Hanyang Univ.) ;
  • Lee, Jin-Woo (Dept. of Civil and Env. Eng., Hanyang Univ.) ;
  • Cho, Yong-Sik (Dept. of Civil and Env. Eng., Hanyang Univ.)
  • 김주영 (한국전력기술주식회사 환경기술그룹) ;
  • 이정규 (한양대학교 공과대학 건설환경공학과) ;
  • 이진우 (한양대학교 공과대학 건설환경공학과) ;
  • 조용식 (한양대학교 공과대학 건설환경공학과)
  • Received : 2011.02.23
  • Accepted : 2011.04.28
  • Published : 2011.06.30
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Abstract

Abrupt and gradual levee breach analyses on the flat domain were implemented by laboratory experiments and numerical simulations. To avoid the reflective wave from the side wall the experiment was performed in a large domain surrounded by waterway. A numerical model was developed for solving the two-dimensional gradual levee breach flow. The results of the numerical simulation developed in this study showed good agreement with those of the experimental data. However, even if the numerical schemes effectively replicated the trends of the observed water depth for the first shock, there were little differences for the second shock. In addition, even though the model considered the Smagorinsky horizontal eddy viscosity, the location and height of the hydraulic jump in the numerical simulation were not fairly well agree with experimental measurements. This shows the shallow water equation solver has a limitation which does not exactly reproduce the energy dissipation from the hydraulic jump. Further study might be required, considering the energy dissipation due to the hydraulic jump or transition flow from reflective wave.

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References

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