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

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Method of the Laboratory Wave Generation for Two Dimensional Hydraulic Model Experiment in the Coastal Engineering Fields: Case of Random Waves

해안공학분야에서 2차원 수리모형실험을 위한 실험파 설정방법: 불규칙파 대상

  • Lee, Jong-In (Department of Civil Engineering, Chonnam National University) ;
  • Bae, Il Rho (Experimental Center for Coastal and Harbour Engineering, Chonnam National University) ;
  • Kim, Young-Taek (Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology)
  • 이종인 (전남대학교 공과대학 토목공학과) ;
  • 배일로 (전남대학교 해안항만실험센터) ;
  • 김영택 (한국건설기술연구원 수자원하천연구본부)
  • Received : 2021.12.08
  • Accepted : 2021.12.24
  • Published : 2021.12.31
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Abstract

The experiments in coastal engineering are very complex and a lot of components should be concerned. The experience has an important role in the successful execution. Hydraulic model experiments have been improved with the development of the wave generator and the advanced measuring apparatus. The hydraulic experiments have the advantage, that is, the stability of coastal structures and the hydraulic characteristics could be observed more intuitively rather than the numerical modelings. However, different experimental results can be drawn depending on the model scale, facilities, apparatus, and experimenters. In this study, two-dimensional hydraulic experiments were performed to suggest the guide of the test wave(random wave) generation, which is the most basic and important factor for the model test. The techniques for generating the random waves with frequency energy spectrum and the range for the incident wave height [(HS)M/(HS)T = 1~1.05] were suggested. The proposed guide for the test wave generation will contribute to enhancing the reliability of the experimental results in coastal engineering.

해안분야 실험은 복잡하며, 여러 요소들을 고려해야 한다. 성공적인 수행에는 경험이 중요한 요소가 되기도 하며, 조파기 및 계측기의 성능향상 등으로 지속적으로 발달되어 왔다. 수리실험은 구조물의 안정성 및 해안수리학적 특성 검토 분야에서 수치실험에 비해 직관적인 관찰이 가능하다는 장점이 있다. 그러나 모형축척, 실험시설 및 장비와 실험 수행자의 판단 등에 의해 서로 다른 결과가 도출될 수도 있다. 본 연구에서는 수리실험에 있어 가장 기본이면서 중요한 실험파(불규칙파) 설정을 위한 지침을 제안하기 위해 2차원 실험을 수행하였다. 실험을 통하여 주파수 스펙트럼을 활용한 불규칙파의 설정방법 및 입사파고의 범위[(HS)M/(HS)T = 1~1.05]에 대하여 제시하였다. 제안된 실험파 설정 지침은 실험결과의 신뢰도 향상에 기여할 수 있기를 기대한다.

Keywords

Acknowledgement

본 논문은 국토교통부 국토교통기술촉진연구사업의 연구비지원(18-CTAP-B139288-02) 및 해양수산부 및 해양수산과학기술진흥원의 연구비 지원(과제번호: 20180323)으로 수행된 연구이며, 연구비 지원에 감사드립니다.

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