Abstract
In this study, numerical modelling to see the effect of mangrove merged with seawall on wave mitigation over flat topography is developed. The model is based on Navier-Stokes equations. Resistance of the mangrove is described using Manning friction, whereas the seawall is created from particles and added directly to the topography. Numerical solution of the model is solved using Smoothed Particle Hydrodynamics (SPH). Two types of seawalls; vertical and incline seawall are used. Results of the numerical simulations show that existence of the mangrove merged with vertical seawall can reduce 10.52191% in wave height and prevent the wave to pass the seawall. Whereas the existence of the mangrove merged with incline seawall can reduce 15.39512% in wave height but the wave still passes the seawall.
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