Investigation of effect of porosity of breakwater using a combination of finite element and boundary element methods
The construction of a suitable breakwater is of great importance for the protection of the coast and offshore facilities. When the wave hits the breakwater, part of it is reflected and this part hits the wave that is attacking the structure, which causes water turbulence in front of the breakwater. If the turbulence is severe, it can cause the heel of the breaker to heal over time. Design engineers are forced to use high reliability coefficients in the design in order to solve the problems of stability and bed erosion in front of various breakwaters exposed to high waves. Today, engineers have come up with a suitable solution to solve this problem and reduce the cost of rubble mound breakwater, and that is to use breakwater with optimal porosity. It is now necessary for design engineers to calculate the wave reflectance of porous breakwaters. In this research, using a combination of two finite element numerical methods (FEM) and boundary element method (BEM) for breakwater and fluid modeling has been investigated, so that the finite wave geometry breaker, Finite components and fluid environments are modeled by the boundary element method. The results show that increasing the porosity increases the reflectance, which will decrease with increasing wavelength.
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