SPH를 이용한 해안에서의 2차원 비선형파 수치 시뮬레이션

초록

Unsteady nonlinear wave motions on the free surface in shallow water and over slopes of various geometries are numerically simulated using SPH(Smoothed Particle Hydrodynamics) method. In the SPH method, the state of a system is represented by a set of particles, which possess individual material properties and move according to the governing conservation equation. Two-dimensional Navier-Stokes equations and the continuity equation are used for the computations. Piston-type wavemaker is employed for the generation of waves. For the simulation of wave breaking phenomena, the computations are carried out with various wave periods and sea bottom slopes in surf zone. The results are compared with other existing computational and experimental results. Agreement between the experimental data and the computation results is good.