Abstract
: Submerged breakwaters are designed to reduce the wave run-up in coastal areas. Theeffectiveness can be modelled using numerical methods. The Nonlinear Shallow Water Equation has beenapplied as the fundamental model. The equation has been solved analytically and numerically to obtain therun-up coefficient. The results from the analytical and numerical solutions have been combined with publishedexperimental data to validate the analytical model and numerical scheme. It is found that both analytical andnumerical results are in a very good agreement with the experimental data with relatively small errors.Furthermore, the numerical scheme has been implemented to observe the influence of the breakwater’scharacteristics, such as its height and length, towards the reduction of wave run-up. From the observation, theoptimum size of the breakwater is determined to reduce the wave run-up as much as possible. The results canbe applied to future design of submerged breakwaters for reducing long wave run-up.
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