Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Analysis of Reflection Coefficients of Waves Propagating over Various Depression of Topography

다양한 함몰지형 위를 통과하는 파랑의 반사율 해석

  • Published : 2007.11.30
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Abstract

In this study, wave reflection due to depression of seabed is calculated by using eigenfunction expansion method. The proper numbers of steps and evanescent modes needed for analysis are suggested by applying the eigenfunction expansion method to bottom topography of which slope or curvature varies. While satisfying shallow or intermediate water depth condition, the optimal figure of depression of seabed is obtained by calculating reflection coefficient for various depressions of seabed. The reflection coefficient with distance between the depression of seabeds is then calculated after arraying the optimal geometry in two and three rows.

본 연구에서는 고유함수 전개법을 이용하여 다양한 형태의 함몰지형 위를 통과하는 파랑의 반사율을 계산하였다. 기울기와 곡률이 변하는 지역에 고유함수 전개법을 적용하여 해석 시 필요한 적절한 구간의 수와 소멸파 성분의 개수를 제안하였다. 천해역 및 중간수심영역을 만족하는 조건에서 다양한 형태의 함몰지형에 대해 반사율을 계산하여 최적의 효율을 가지는 단면의 형상을 제시하였으며 최적 단면을 2열 및 3열로 배열하여 배열 간격에 따른 반사율을 계산하였다.

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References

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  1. Performance Evaluation of Multi-Arrayed Submerged Structures by Impermeable Depositional Topography vol.14, pp.4, 2014, https://doi.org/10.9798/KOSHAM.2014.14.4.343
  2. Effects of evanescent modes on three-dimensional depression of seabed vol.42, pp.12, 2009, https://doi.org/10.3741/JKWRA.2009.42.12.1125