Optimal sinusoidal submerged breakwater for coastal protection

In this paper, we investigate the wave damping mechanism by sinusoidal submerged breakwater using a half-linear Shallow Water Equations (SWE). We solve equations analytically multi-scale expansion method to obtain elevation profile over with specific height and length. Then, get information about how much caused breakwater, derived analytical solution reflection transmission coefficient. Furthermore, also SWE numerically staggered finite volume method. Moreover, effectiveness of as coastal protector is observed from value coefficient Kt, that ratio between incoming amplitude. Hence, smaller Ktimplies larger reduction on For validation, compare numerical Ktresult Kt. result paper will be useful construct effective for protection.