WAVE INTERACTIONS WITH N-EMERGED POROUS BREAKWATERS ON A MUDDY BOTTOM

• Main Author: Michael, Laurentius
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/64687
• Institution: Institut Teknologi Bandung

In this study, we investigate wave attenuation by n-emerged porous breakwaters in a muddy basin. We use a Two-Layer Shallow Water Type model for capturing the interaction for water and mud. The wave transmission coefficient, which is the ratio of the amplitude of the wave transmitted by the basin to the amplitude of the incoming wave, is then derived analytically from the model. This coefficient is our instrument for evaluating the effectiveness of the whole basin in reducing incoming wave amplitude. Additionally, the finite volume method on a staggered finite grid is then used to solve the model numerically and compute the numerical version of the corresponding wave transmission coefficient. The numerical scheme is then validated by comparing simulation results and analytical results. The numerical scheme is then used alongside the analytical formulation of the wave transmission coefficient to investigate the effects of varying the size and characteristics of the porous breakwaters and that of separating a single block of porous breakwater into multiple blocks of porous breakwaters on the wave attenuation capabilities of the basin. We believe that these findings would be beneficial in the design of a coastal protection system