Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Analysis of Bragg Reflection of Waves due to Rectangular Impermeable Submerged Breakwaters with Two-Dimensional Finite Element Method

2차원 유한요소법을 이용한 불투과성 사각형 수중방파제의 Bragg 반사 해석

  • 조용식 (한양대학교 공과대학 토목공학과) ;
  • 정우창 (홍익대학교 공과대학 토목공학과)
  • Published : 2003.06.01
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Abstract

The Bragg reflection of monochromatic waves propagating over a rectangular-typed impermeable submerged breakwaters is numerically investigated by using the finite element method. The reflection coefficients calculated from the present model are compared with those of laboratory measurements and the eigenfunction expansion method. A good agreement is observed. The finite element model is also applied to calculate reflection coefficients according to variations of length and width of submerged breakwater.

본 연구에서는 유한요소법을 이용하여 일정 수심상에서 사각형 형상의 불투과성 수중방파제에 의한 파랑의 Bragg 반사를 수치적으로 고찰하였다. 유한요소법에 의해 계산된 반사율은 수리모형실험을 통해 얻어진 결과와 비교하였을 때 비교적 잘 일치하였으며, 고유함수전개법에 의한 결과와도 좋은 일치를 나타내었다. 그밖에 본 연구에서 개발된 모형은 불투과성 수중방파제의 폭과 길이의 변화에 따른 반사율 계산에 적용되었다.

Keywords

References

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