Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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The Calculation of Reflection Coefficients of Water Waves over Various Shear Currents with a Uniform Depth Topography

다양한 외부흐름에 대한 평탄한 지형을 통과하는 파랑의 반사율 산정

  • Lee, Jun-Whan (Dept. of Civil and Environ. Engrg., Hanyang University) ;
  • Cho, Yong-Sik (Dept. of Civil and Environ. Engrg., Hanyang University)
  • 이준환 (한양대학교 건설환경공학과) ;
  • 조용식 (한양대학교 공과대학 건설환경공학과)
  • Received : 2012.08.14
  • Accepted : 2012.10.25
  • Published : 2013.03.31
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Abstract

The reflection coefficients of monochromatic water waves over various shear currents flowing on a constant topography are estimated analytically in this study. The region of varying shear currents is represented by a finite number of tiny steps with a uniform depth topography. The proper numbers of steps and evanescent modes needed for the analysis are proposed by a series of convergence tests. The characteristics of reflection coefficients for various shear currents conditions are also examined.

본 연구에서는 다양한 외부흐름에 대한 평탄한 지형을 통과하는 파랑의 반사율을 해석적으로 계산하였다. 수심이 일정한 지형에 외부흐름을 작은 구간의 계단형으로 단순화하였다. 계산에 필요한 적절한 구간의 수와 소멸파 성분의 개수를 제안하였다. 아울러, 외부흐름의 변화와 다양한 양상에 따른 반사율의 특징을 서술하였다.

Keywords

References

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