대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제26권6B호
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  • Pages.633-639
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  • 2006
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  • 1015-6348(pISSN)
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  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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유공벽에 의한 파의 반사율 산정에 있어서 경험공식의 타당성

Validity of Empirical Formulas for Estimation of Reflection Coefficient of Waves Due to Perforated Wall

  • 윤성범 (한양대학교 공학대학 토목환경공학과) ;
  • 이종인 (한국건설기술연구원) ;
  • 한상철 (대양컨설턴트 항만부)
  • 투고 : 2006.03.24
  • 심사 : 2006.10.11
  • 발행 : 2006.11.29
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초록

여러 가지 두께의 유공벽을 이용하여 다양한 파 조건에 대한 반사율 실험을 실시하고 기존 이론식의 타당성을 검토하였다. 그 결과 유공벽의 두께가 두꺼우면 에너지손실계수가 기존 이론식에 사용된 예연오리피스 공식의 약 62% 정도로 감소하며, 관성저항길이는 벽의 두께가 증가함에 따라 선형적으로 증가하는 것으로 나타났다. 관성저항의 길이가 증가할수록 최소반사율을 주는 유수실 폭이 감소한다. 그러므로 본 연구에서 얻어진 결과는 유공벽 설계시 유용하게 사용될 수 있을 것으로 판단된다.

The validity of the existing formulas for the estimation of reflection coefficient of waves due to perforated wall is investigated using the result of hydraulic experiments conducted with perforated walls of various thickness. The result shows that, when the wall is thick, the energy loss coefficient is reduced to 62% of the value evaluated using the existing formula for sharp-crested orifice. The result also shows that the length of inertia resistance increases linearly as the thickness of the wall increases. The width of chamber to achieve the minimum reflection of waves decreases as the length of inertia resistance increases. Thus, the result found in the present study can be usful for the design of perforated wall.

키워드

참고문헌

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