AbstractLow-crested (LC) rubble mound breakwaters are used for coastal protection. The main advantage of these structures is their mild aesthetic impact on the natural environment. As the waves approach and transmit over these structures, significant hydrodynamic processes occur in their proximal area, such as wave breaking, wave reflection, wave overtopping and transmission (Garcia et al., 2004). Many researchers have studied the hydrodynamics of flow in the vicinity of such structures, as well as the influence of their geometrical characteristics on the flow field. However, in most studies, the structures are either emerged or submerged, while the case in which the crest level of the breakwaters is at the still water level (SWL) has to be further investigated.
Balaras (2004). Modeling complex boundaries using an external force field on fixed Cartesian grids in largeeddy simulations, Computer & Fluids, vol. 33, pp. 375- 404.
Beji and Battjes (1994), Numerical simulation of nonlinear wave propagation over a bar, Coastal Engineering, vol. 23, pp. 1-16.
Garcia, Lara and Losada (2004), 2-D numerical analysis of near-field flow at low-crested permeable breakwaters, Coastal Engineering, vol. 51, pp. 991- 1020.
Liu, Pengzhi,, Chang, and Sakakiyama (1999). Numerical modeling of wave interaction with porous structures. Journal of Waterway, Port, Coastal, Ocean Engineering, 125(6), 322-330.
Ting and Kirby (1994), Observation of undertow and turbulence in a laboratory surf zone, Coastal Engineering, vol. 24, pp. 51-80.