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

  • 제34권4호
  • /
  • Pages.93-99
  • /
  • 2022
  • /
  • 1976-8192(pISSN)
  • /
  • 2288-2227(eISSN)
한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
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3차원 조파수조에서 바닥 조파장치에 의해 재현된 규칙파에 대한 해석적 연구

An Analytical Study of Regular Waves Generated by Bottom Wave Makers in a 3-Dimensional Wave Basin

  • 정재상 (한국농어촌공사 상주지사) ;
  • 이창훈 (세종대학교 건설환경공학과)
  • Jung, Jae-Sang (Sangju District Office, Korea Rural Community Corporation) ;
  • Lee, Changhoon (Department of Civil and Environmental Engineering, Sejong University)
  • 투고 : 2022.07.10
  • 심사 : 2022.08.03
  • 발행 : 2022.08.31
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초록

본 연구에서는 바닥 조파장치가 설치된 3차원 조파수조에서 재현된 규칙파에 대한 해석해를 유도하였다. 바닥 조파장치로 삼각형 형상, 사각형 형상 및 두 형상이 복합된 형상이 적용되었다. 선형파 이론과 움직이는 바닥에 대한 경계조건, 동역학적 및 운동학적 자유수면 경계조건을 이용하여 조파수조 내의 3차원 속도포텐셜을 유도하였다. 그리고, 이로부터 각 방향 성분의 유속과 자유수면변위에 대한 해석해를 구하였다. 유도된 해석해는 바닥 조파장치가 설치된 조파수조에서 규칙파의 전파 특성에 대해 물리적으로 타당한 결과를 보였다. 바닥 조파장치가 snake 형태로 움직이는 경우의 비스듬히 전파하는 파랑의 조파에 대해서도 해석해를 유도하였으며, 해석 결과는 이론적으로 예측한 결과와 일치하였다.

Analytical solutions for regular waves generated by bottom wave makers in a 3-dimensional wave basin were derived in this study. Bottom wave makers which have triangular, rectangular and combination of two shapes were adopted. The 3-dimensional velocity potential was derived based on the linear wave theory with the bottom moving boundary condition, kinematic and dynamic free surface boundary conditions in a wave basin. Then, analytical solutions of 3-dimensional particle velocities and free surface displacement were derived from the velocity potential. The solutions showed physically valid results for regular waves generated by bottom wave makers in a wave basin. The analytical solution for obliquely propagating wave generation from bottom wave maker which works like a snake was also derived. Numerical results of the solution agree well with theoretically predicted results.

키워드

과제정보

본 연구는 국토교통부 국토교통기술촉진연구사업의 연구비 지원(과제번호: 22CTAP-C164367-02)에 의해 수행되었습니다.

참고문헌

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