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

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Hydraulic Experiments and Numerical Analysis for Wave Breaking of Regular Waves over a Shelf Region

Shelf 지형에서 규칙파의 쇄파실험 및 수치해석

  • 이종인 (한국건설기술연구원 수자원연구부) ;
  • ;
  • 김영택 (한국건설기술연구원 수자원연구부)
  • Published : 2006.06.01
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Abstract

The accuracy impact of using high-order Boussinesq-type model as compared to the typical order model is examined in this paper. The multi-layer model developed by Lynett and Liu(2004a) is used for simulating of wave breaking over a shelf region. The nonlinearity of the waves tested, ${k_0}{A_0}$, ranges from 0.029 to 0.180. The overall agreement between the two-layer model and the hydraulic experiments are quite good. The one-layer model overshoals the wave near the breakpoint, while the two-layer model shoals at a rate more consistent with the experimental data.

본 연구에서는 Boussinesq방정식을 지배방정식으로 한 기존의 강비선형 모형과 고차 모형(다층모형)의 정확도를 각각 검토하였으며, 사용된 다층모형은 Lynett과 Liu(2004a)에 의해 개발된 것이다. 수치모형으로 shelf 지형에서의 쇄파를 모의하였으며, 실험에 적용된 파랑의 비선형성(${k_0}{A_0}$)은 0.029~0.180 범위이다. 전반적으로 2층 모형의 해석결과가 실험결과와 잘 일치하였다. 1층모형의 경우에는 쇄파점 가까운 곳에서부터 파고가 빨리 증폭이 된 반면, 2층모형의 파고증폭 정도는 수리실험결과와 잘 부합하였다.

Keywords

References

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