Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Variation Characteristic of Wave Field around 2-Dimensional Low-Crested-Breakwaters

2차원저천단구조물(LCS)의 주변에서 파동장의 변동특성

  • Lee, Jun Hyeong (Dept. of Civil and Environmental Eng., Graduate School, Korea Maritime and Ocean University) ;
  • Jung, Uk Jin (Dept. of Civil and Environmental Eng., Graduate School, Korea Maritime and Ocean University) ;
  • Bae, Ju-Hyun (Dept. of Civil and Environmental Eng., Graduate School, Korea Maritime and Ocean University) ;
  • Lee, Kwang-Ho (Dept. of Civil Eng., Catholic Kwandong University) ;
  • Kim, Do-Sam (Dept. of Civil Eng., Korea Maritime and Ocean University)
  • 이준형 (한국해양대학교 대학원 토목환경공학과) ;
  • 정욱진 (한국해양대학교 대학원 토목환경공학과) ;
  • 배주현 (한국해양대학교 대학원 토목환경공학과) ;
  • 이광호 (가톨릭관동대학교 토목공학과) ;
  • 김도삼 (한국해양대학교 건설공학과)
  • Received : 2019.10.19
  • Accepted : 2019.10.25
  • Published : 2019.10.31
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Abstract

This study evaluates the variation characteristics of wave fields (transmission ratio, wave height, time-averaged velocity and time-averaged turbulent kinetic energy) for two-dimensional low-crested structure by olaFlow model based on the two-phases flow numerically. In addition, the present numerical results are verified by comparing with the existing experimental results. The time-averaged velocity, one of various numerical results is formed counterclockwise circulating cell on the front of structure and is occurred strong uni-directional flow on onshore side. It is shown that these are closely related to the factors such as overtopping, etc.

본 연구에서는 olaFlow 모델에 의한 혼상류수치해석법을 적용하여 2차원저천단구조물에 의한 파동장의 변동특성(전달율, 파고, 평균유속 및 평균난류운동에너지)을 수치적으로 평가한다. 또한, 기존의 수리실험결과와 비교하여 수치해석결과의 타당성을 검증한다. 도출된 수치해석결과 중에 평균유속은 구조물 항외측의 전면에서 반시계방향의 순환류셀을 형성하고, 항내측에서 항내로 향하는 강한 일방향흐름을 나타내며, 이들은 월파 등의 요소와 밀접한 관계를 가진다는 것 등을 알 수 있었다.

Keywords

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