Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Junction Flow Analyses by Twp-Dimensional Numerical Model

2차원 수치모형에 의한 합류흐름 해석

  • Yoon, Tae-Hoon (Prof. Dept. of Civil Engrg., Hanyang Univ.) ;
  • Jung, Eui-Taek (Project Design and Planning Dept., Korea Water Resources Corporation) ;
  • Park, Jong-Suk (Deputy Section Chief, Water Resources Team, Kumho Engineering Co., Ltd.)
  • 윤태훈 (한양대학교 토목공학과) ;
  • 정의택 (한국수자원공사 설계계획처) ;
  • 박종석 (금호엔지니어링(주) 수자원부)
  • Published : 1998.10.01
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Abstract

The flow configurations at open channel junctions are analyzed by 2-D depth averaged mathematical model. The governing factors of the flow at the junction are found to be discharge ratio between tributary flow and the post confluence combined flow, and confluence angle. Analyzed by these two factors are flow patterns and flow depth variation at the confluence, discharge ratio above which the flow upstresm from the junction is affected by the tributary flow and the geometries of a recirculation region. Further, the flow contraction in the downstream region and the deflection of the tributary flow in the main channel were investigated. The numerical results are compared with the existing experimental data fairly well.

개수로 합류부의 흐름양상이 2차원 수심적분 수학적 모형에 의하여 해석된다. 합류부 흐름에 지배적인 매개변수는 지류와 합류후 유량의 비와 합류각으로 나타났다. 이들 인자의 항으로 해석되는 대상은 합류부에서 흐름양상과 수심의 변화, 본류에서 합류부 상류흐름이 영향을 받기 시작하는 유량비 및 순환영역의 기하특성이다. 또한 합류하류에서 흐름수축과 지류의 굽음각이 조사되었다. 수치해석결과는 기존 실험자료와 비교적 잘 맞는것으로 나타났다.

Keywords

References

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