Figure 10. Three-dimensional illustration of Froude number in various tailwaters. (a) 129.10 m, (b) 129.40 m, (c) 129.70 m, (d) 129.99 m, and (e) 130.30 m

FLOW-3D 모델을 이용한 부유 플랩형 폭풍 해일 방어벽의 수리 특성 분석

1. 서론

  • 본 연구는 부유 플랩형 폭풍 해일 방어벽의 수리학적 특성을 수치적으로 분석하는 것을 목적으로 함.
  • 폭풍 해일 제어 및 연안 홍수 완화에서 방어벽의 효과를 평가하기 위해 수행됨.
  • FLOW-3D 소프트웨어를 이용하여 방어벽의 유체역학적 거동을 모델링함.

2. 연구 방법

  • 전산유체역학(CFD) 기법을 적용하여 부유 플랩형 방어벽을 모델링함.
  • 수치 모델의 주요 구성 요소:
    • 레이놀즈 평균 나비에-스토크스(RANS) 방정식을 이용한 난류 모델링.
    • VOF(Volume of Fluid) 기법을 사용하여 자유 수면 추적.
    • 실제 조석(tidal) 및 폭풍 해일(storm surge) 조건을 반영한 경계 조건 적용.
  • 기존 실험 데이터를 활용하여 모델 검증 수행.

3. 연구 결과

  • 주요 연구 결과:
    • 방어벽이 수위 감소 및 파랑 에너지 저감에 효과적임을 확인.
    • 방어벽 각도에 따라 와류(vortex) 형성 및 난류 강도가 변화함.
    • 파고, 방어벽 유연성, 유속에 따라 구조적 안정성이 영향을 받음.
  • 실험 데이터와의 비교를 통해 모델의 예측 정확성이 높음을 확인함.

4. 결론

  • 부유 플랩형 폭풍 해일 방어벽은 연안 홍수 완화에 효과적인 대안이 될 수 있음.
  • CFD 시뮬레이션을 통해 방어벽 설계 최적화에 유용한 정보를 제공할 수 있음.
  • 향후 연구에서는 장기적인 구조적 내구성 및 실제 환경에서의 적용 가능성을 중점적으로 다뤄야 함.
Figure 1. Location of the study area
Figure 1. Location of the study area

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