Zakaria, Ahmad (2009) Study Dispersion Effects of Wave Propagation over Mangrove Models in Shallow Water using 2-D Hyperbolic Wave Equation. In: International Conference 2009 on Green Technology and Engineering, 17 - 17 April 2009, Universitas Malahayati.

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The aim of this research is to study dispersion effects of wave propagation over mangrove models in shallow water environments. This numerical modeling of wave propagation is using two dimensional parabolic wave equation. In this study, numerical solution of the parabolic wave equation is using finite difference method. For solving the 2nd order derivatives of the wave equation, the finite-difference method is one of several methods using discrete approximations that can be used to calculate linear combination of approximation of the function, at grid points. Second order of accuracies explicit finite-difference method are employed to simulate wave propagation. The mangroves were modeled in other to dissipate waves propagate over them. To reduce reflections from non physical boundaries, Reynolds boundary condition method was used. A line source was used to model wave sources. Ricker wavelet is used as a line source. In the environment setup of the model, assumed the waves propagate in shallow water with the depth (d) is equal to 5 meter. Results of this research present wave propagation and dispersion effects, at location before and after the mangrove models. The results present the dispersion effects of the mangroves clearly. If results with the different scenarios or different situation are compared, where the model was using full mangroves with the narrow channel, present more dispersions and more dissipated than only using a half of the mangroves. It is concluded that wave propagation over mangroves can be modeled numerically, to study and to investigate dispersion effects of the mangroves as green breakwaters.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: dispersion effects, parabolic wave equation, finite difference, mangrove
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik (FT) > Prodi Teknik Sipil
Depositing User: Dr. Ahmad Zakaria
Date Deposited: 27 Mar 2023 00:53
Last Modified: 27 Mar 2023 00:53

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