Journal of the Korean Society for Marine Environment & Energy (한국해양환경ㆍ에너지학회지)

The Korean Society for Marine Environment and Energy (한국해양환경•에너지학회)
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Applicability of 3-D Models for Hydrodynamic Simulation near Tidal Flat Area

조간대 해역의 3차원 유동모형 적용성

  • Kang, Ju-Whan (Dept. of Civil Engineering, Mokpo National University) ;
  • Kim, Yang-Seon (Dept. of Civil Engineering, Mokpo National University) ;
  • So, Jae-Kwi (Climate Change & Coastal Disaster Research Department, KORDI)
  • 강주환 (목포대학교 토목공학과) ;
  • 김양선 (목포대학교 토목공학과) ;
  • 소재귀 (한국해양연구원 기후연안재해부)
  • Received : 2011.05.03
  • Accepted : 2011.07.15
  • Published : 2011.08.25
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Abstract

Applicabilities of two 3-D hydrodynamic models on Chungkye Bay in which tidal flats are well developed were examined. Both EFDC model and ESCORT model with the ${\sigma}$-coordinate showed fairly good results. However, their efficiencies were lowered especially on the tidal flats due to dense vertical grids. This inefficiency could be overcome by using the z-coordinate of the ESCORT model keeping similar accuracy.

조간대가 발달되어 있는 청계만 해역에서 3차원 해수유동모형의 적용성을 검토하였다. EFDC 모형과 ESCORT 모형을 ${\sigma}$-격자체계하에서 적용한 결과 EFDC 모형이 우수한 결과를 보였으며 ESCORT 모형 역시 무난한 적용성을 보이고 있다. 그러나 조간대 상에서 얕은 수심을 동일한 격자 개수로 분할하는 ${\sigma}$-격자체계의 특성에 연유하여 비효율적인 측면을 확인할 수 있었다. ESCORT 모형에서 제공되는 z-격자체계로 모의한 결과 이러한 비효율성을 피할 수 있었으며 정확성에서도 유의적인 차이가 없는 것으로 나타나고 있다.

Keywords

References

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