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Title: Numerical simulation of nonlinear dispersive waves propagating over a submerged bar by IB-VOF model
Authors: Shen, L. 
Chan, E.-S. 
Keywords: Hydrodynamic forces
IB-VOF method
Nonlinear dispersive waves
Steep slope
Submerged bar
Wave propagation
Issue Date: Feb-2011
Citation: Shen, L., Chan, E.-S. (2011-02). Numerical simulation of nonlinear dispersive waves propagating over a submerged bar by IB-VOF model. Ocean Engineering 38 (2-3) : 319-328. ScholarBank@NUS Repository.
Abstract: It is a good test for a numerical model to simulate progressive waves propagating over a submerged bar with a relatively high ratio of slopes. In this paper, the combined IB-VOF model is used to predict nonlinear dispersive waves propagating over a submerged bar with both slopes of 1:2. The predicted free surface elevations are compared with the experimental data and numerical results presented by other researchers. The comparison shows that the IB-VOF model is able to provide satisfactory wave profiles in the shallow water with strong nonlinear effects and in the wave transmitted region with strong wave dispersion in particular. Moreover, the wave evolution behind the submerged bar is described in detail, including the spatial wave profile modulation, spectral analysis of the time-series waves, flow velocity and pressure fields, and kinetic energy distribution. The effect of fluid viscosity on the numerical simulations is also studied, and it is found that the effect on the wave evolution considered in this paper is not significant. Finally, the hydrodynamic force acting on the bar is calculated using the IB-VOF model. © 2010 Elsevier Ltd. All rights reserved.
Source Title: Ocean Engineering
ISSN: 00298018
DOI: 10.1016/j.oceaneng.2010.11.014
Appears in Collections:Staff Publications

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