Numerical simulations of two-dimensional floating breakwaters in regular waves using fixed cartesian grid

International Journal of Naval Architecture and Ocean Engineering

卷:6

Jeong Kwang-Leol¹  Lee Young-Gill² 

[1] Department of Naval Architecture and Ocean Engineering, Graduate School of Inha University, Incheon, Korea;

[2] Department of Naval Architecture and Ocean Engineering, Inha University, Incheon, Korea;

关键词: Floating breakwater;    Cartesian grid;    Marker-density method;    Lock-in;    Free roll decay;   

DOI  :  10.2478/ijnaoe-2013-0173

来源: DOAJ

【 摘 要 】

The wave attenuation by floating breakwaters in high amplitude waves, which can lead to wave overtopping and breaking, is examined by numerical simulations. The governing equations, the Navier-Stokes equations and the continuity equation, are calculated in a fixed Cartesian grid system. The body boundaries are defined by the line segment connecting the points where the grid line and body surface meet. No-slip and divergence free conditions are satisfied at the body boundary cell. The nonlinear waves near the moving body is defined using the modified markerdensity method. To verify the present numerical method, vortex induced vibration on an elastically mounted cylinder and free roll decay are numerically simulated and the results are compared with those reported in the literature. Using the present numerical method, the wave attenuations by three kinds of floating breakwaters are simulated numerically in a regular wave to compare the performance.

【 授权许可】

Unknown