Abstract
Shallow water equation (SWE) has been widely used for wave run up simulation. Nevertheless, the equation itself has no appropriate terms for wave breaking. Recent studies have shown that breaking condition can be simulated by using certain shock capturing numerical scheme. The Manning approach which is commonly used to calculate bed stress in SWE is not always accurate in case of unsteady flow such as wave. Boundary layer approach would be more suitable in assessing bed stress under wave motion. In this study, SWE model coupled with k-ω model is used to simulate breaking solitary wave run up. A finite volume shock capturing scheme is used to enhance the SWE capability in simulating wave breaking. Comparison shows that the new method provides satisfying results and it can be used for further analysis of boundary layer beneath the wave run up.
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