한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제37권4호
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  • Pages.257-271
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  • 2004
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  • 2799-8746(pISSN)
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  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
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입자추적방법을 이용한 다중저장대모형 개발

Development of Multiple Transient Storage Model Using Particle Tracking Method

  • 정태성 (UC Davis 공과대학 토목환경공학과) ;
  • 서일원 (서울대학교 공과대학 토목공학과)
  • 발행 : 2004.04.01
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초록

본류대를 따라 저장대가 주기적으로 존재하는 다중저장대모형을 개발하고 자연하천의 혼합거동을 해석하였다. 개발된 모형 및 하나의 저장대를 갖는 기존의 저장대모형을 비교하기 위하여 모형실험 결과를 이용하였다. 본 모형을 이용하여 구한 농도분포는 모형실험에서 수집된 시간에 따른 농도분포를 잘 재현하는 반면, 연속적인 저장대를 갖는 기존모형은 불연속적인 저장대 구조로 인해 발생하는 농도분포의 부차적인 융기부분을 정확히 재현하지 못하는 것으로 나타났다. 본 모형의 현장 적용성을 검토하기 위하여 새로운 모형을 미국 미네소타주에 위치한 Shingobee River에 적용하고 혼합거동을 해석한 결과 새로운 저장대 모형은 저장대가 존재하는 자연하천에서의 분산거동을 정확하게 모의하는 것으로 나타났다.

To evaluate behavior in representing solute transport in natural streams, the storage zone model of the axially periodic transient storage zones is developed. The periodic transient storage zone model and continuous storage zone model are verified using the parameters and the tracer concentration vs. time curves observed in laboratory channels. The periodic storage zone model best fit the measured concentration vs. time curves, while the continuous storage model fails to describe some fluctuations and the plateau region of the tail occurring in a discontinuous transient storage system. Dispersion data from Shingobee River, Minnesota, U. S. A. show that the concentration curves simulated by the proposed model fit the observed concentration curves well.

키워드

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