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A New approach for simulations of water-wave motions using non-hydrostatic shallow water model : final research report
This document was written as a final report of a research project to develop a new approach for simulations of water-wave motions. Such simulations will be performed using a non- hydrostatic shallow water model, which is simple but robust, making accurate water-wave simulations possible. Unlike the well-known Boussinesq-type equations models that take high-order (spatially and temporally) horizontal velocity fields into account and are usually used for ocean modeling, the proposed model utilizes a one-layer model accounting for the non-hydrostatic terms into the original shallow water equations, thus enabling faster computa- tions than those of the Boussinesq-type equations models. The model is called NUFSAW2D, employing the Godunov scheme for the spatial discretization and being of (at least) second- order accurate, in which the artificial viscosity technique is used as a solver. Second-order accuracy is also achieved in terms of the temporal discretization by employing the Runge- Kutta second-order method. A novel way is proposed to make the computations more effi- cient, namely to compute the non-hydrostatic terms sequentially after finishing the hydrostatic ones within the calculation of the Runge-Kutta second-order method. The model proposed will be useful for advanced ocean applications and for coastal and offshore infrastructures designs.
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145922 | R/SB - FT | Laporan Penelitian Dosen | 532.593 NEW | Gdg9-Lt3 (LPD-LPM FT/SIPIL) | Tersedia namun tidak untuk dipinjamkan - No Loan |
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