한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)

한국해양공학회 (Korean Society of Ocean Engineers)
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수치조파기에 의해 생성되는 2차원 파도의 유한차분 시뮬레이션

Finite Difference Simulation of Two-dimensional Waves Generated by Numerical Wavemaker

  • 이영길 (인하대학교 공과대학 기계항공공학부 선박해양공학) ;
  • 김강신 (인하대학교 공과대학 기계항공공학부 선박해양공학)
  • Lee, Young-Gill (Dept. of Naval Architecture and Ocean Engineering, School of Mechanical Eng., Eng. College, Inha University) ;
  • Kim, Kang-Sin (Dept. of Naval Architecture and Ocean Engineering, School of Mechanical Eng., Eng. College, Inha University)
  • 발행 : 2003.10.24
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초록

Unsteady two-dimensional nonlinear waves which are generated by the numerical wavemaker of plunging type are numerically simulated using a finite difference method in rectangular grid system. Two-dimensional Navier-Stokes equations and the continuity equation are used for the computations. Irregular leg lengths and stars are employed near the boundaries of body and free surface to satisfy the boundary conditions. Marker-density function method is adopted for the simulation of wave breaking phenomena, and the computations are carried out with various wave amplitudes and two section shapes of wavemaker. The computation results are compared with other existing computational and experimental results, and the agreement between the experimental data and the computation results is good.

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