한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)
- 한국해양공학회 2003년도 춘계학술대회 논문집
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- Pages.231-239
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- 2003
디지털 수치수조 기법에 의한 연안 Tsunami의 수치 시뮬레이션
Numerical Simulation of Nearshore Tsunami Using a Digital Wave Tank Simulation Technique
- Park, Jong-Chun (Dept. of NAOE, Pusan National University) ;
- Chun, Ho-Hwan (Dept. of NAOE, Pusan National University)
- 발행 : 2003.05.23
초록
A Digital Wave Tank simulation technique based on a finite-difference method and a modified marker-and-cell (MAC) algorithm is applied to investigate the characteristics of nonlinear Tsunami propagations and their interactions with a 2D sloping beach and Ohkushiri island, and to predict maximum wave run-up around the island. The Navier-Stokes (NS) and continuity equation are governed in the computational domain and the boundary values updated at each time step by a finite-difference time-marching scheme in the frame of rectangular coordinate system. The fully nonlinear kinematic free-surface condition is satisfied by the modified marker-density function technique. The Nearshore Tsunami is assumed to be a solitary wave and generated from the numerical wavemaker in the developed Digital Wave Tank. The simulation results are compared with the experiments and other numerical methods based on the shallow-water wave theory.
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