Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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A Numerical Study on Characteristics of Flood Wave Passing through Urban Areas (1) : Development and Verification of a Numerical Model

도시지역을 관통하는 홍수파의 특성에 관한 수치적 연구 (1) : 수치모형의 개발 및 검증

  • 정우창 (경남대학교 공과대학 토목공학과) ;
  • 이진우 (한양대학교 대학원 건설환경공학과) ;
  • 조용식 (한양대학교 공과대학 건설환경공학과)
  • Published : 2009.12.31
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Abstract

In this study, a two-dimensional unstructured finite volume model based on the shallow-water equations and well-balanced HLLC scheme is developed. The model is verified by applying to various one- and two-dimensional problems related to the analyses of dam-break wave. The predicted numerical results agree very well with available analytical solutions and laboratory measurements. The model provides slightly more accurate results compared with the existing models.

본 연구에서는 도시지역을 관통하는 댐 붕괴파의 전파특성을 모의하고 분석하기 위한 선행 작업으로 천수방정식과 well-balanced HLLC 기법에 근간을 둔 2차원 비구조적 유한체적모형을 개발하였다. 개발된 모형은 다양한 1차원과 2차원의 댐 붕괴파 해석과 관련된 문제에 대해 검증되었으며, 검증결과 해석해 및 수리모형실험을 통한 실측자료와 매우 일치하는 경향을 나타냈다. 본 연구에서 개발된 수치모형은 현장에서 그리고 수리모형실험을 통해 관측된 수위자료와 잘 일치하였으며, 기존의 모형으로부터 계산된 수위결과에 비해 비교적 보다 정확한 결과를 나타내었다.

Keywords

References

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