Journal of Korean Society of Coastal and Ocean Engineers (한국해안해양공학회지)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Study of Beach Profile Change with a Fixed Artificial Bar Using a Numerical Model

수치모델을 이용한 인공 연안 사주가 있는 해빈 단면 변화 연구

  • 김태림 (군산대학교 해양과학대학 해양응용공학부)
  • Published : 2003.03.01
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Abstract

The changes of beach profile with a natural longshore bar and beach profile with a fixed artificial bar are studied, respectively, using a numerical model. The quasi three dimensional wave-current-sediment transport model is applied with an addition of boundary condition for sediment transport on the artificial structure under water. The study shows that the natural bar adapts itself to the change of coastal physical environment by adjusting its location but the fixed artificial bar causes the formation of a second natural bar seaward of the fixed bar and scouring at the rear of the fixed bar. This study can be applied to work on the change of beach profile with submerged breakwaters.

자연 연안 사주와 고정된 인공 연안 사주가 있는 해안에서의 해양 물리 환경 변화에 따른 해빈 단면변화를 수치모델을 통하여 연구하였다. 수치 모델은 준3차원 파랑-흐름-퇴적물 이동모델에 인공 구조물 위에서의 퇴적물 이동에 대한 경계조건을 제안하여 적용하였다. 수치실험 결과 자연 사주의 경우 해수면이나 파고의 변화에 따라 위치를 이동하며 적을 하였으나 고정된 인공 사주의 경우 사주 후면에 새로운 자연 사주를 형성시키거나 혹은 사주 후면에서 세굴 현상이 발생하기도 하였다. 본 연구는 잠제 설치에 따른 해안 지형 변화를 연구하는데 응용될 수 있다.

Keywords

References

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