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정수면 아래 최적 유공부 길이 산정 : 유공 1실 조건

Estimation of Optimal Slit Length of Perforated Wall below Still Water Level: Single Chamber Condition

  • 김영택 (한국건설기술연구원 하천해안연구실) ;
  • 이종인 (전남대학교 공학대학 해양토목공학과)
  • Kim, Young Taek (Research Fellow, River and Coastla Research Division, Korea Institute of Construction Technology) ;
  • Lee, Jong In (Department of Marine and Civil Engineering, Chonnam National University)
  • 투고 : 2012.09.05
  • 심사 : 2012.11.28
  • 발행 : 2013.04.30

초록

본 연구에서는 단면수리실험으로 다양한 실험파 조건과 유수실 폭(B)을 변화시키면서 유공부 길이(S)와 반사율의 관계를 검토하여 유공 1실인 유공구조물의 정수면 아래 최적 유공부 길이를 제시하였다. 입사파로 불규칙파를 적용함에 따라 최저 반사계수는 상대 유수실 폭($B/L_s$)이 $B/L_s{\approx}0.15$에서 발생하였다. 유공부 길이와 입사파고와의 관계를 고려한 상대 유공부 길이($S/H_s$)는 $S/H_s{\approx}2.5$에서 최저 반사계수를 보였으며, 이는 정수면 아래 유공부 길이가 입사파고의 약 2.5배일때 최적임을 의미하는 것이다.

In this study, the optimal slit length of perforated wall with single chamber below the still water level (SWL) is studied through the two dimensional test. The relationship between the reflection coefficient and the shape of structures such as chamber width(B) and slit length(S) are investigated by applying the various wave conditions. The random waves were used for the test by using Bretschneider-Mitsuyasu frequency spectrum. Minimum reflection coefficient is obtained at $B/L_s{\approx}0.15$ condition, this result is different from the regular wave condition. Also the minimum reflection coefficients are measured at $S/H_s{\approx}2.5$. This means that the optimal slit length below the still water level is 2.5 times of the incident wave height.

키워드

참고문헌

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피인용 문헌

  1. Experimental Study for Wave Reflection of Partially Perforated Caisson by Slit Shape of Front Wall vol.33, pp.4, 2013, https://doi.org/10.12652/Ksce.2013.33.4.1455