This thesis investigated reflection of solitary wave propagating at vertical wall. This research is based on the boundary condition at vertical wall (velocity at wall approximate equals zero). Developed Matlab code is used to simulate wave reflection to account for maximum wave amplitude at vertical wall in six different cases. The maximum wave runup at wall is approximately twice of the incident wave amplitude. These results compared favorably with results that are calculated based on Byatt-Smith (1971) and Philip-Khaled’s (2004) formula. It was found that there exists a slight phase shift of the maximum wave runup with Byatt-Smith (1971) and Philip-Khaled’s (2004) formula for the case of a small amplitude such as ε = 0.1, ε = 0.2 and ε = 0.3, where ε = a/h is the wave nonlinearity. A larger incident wave amplitude (ε = 0.4, ε = 0.5) would produce a more obviously phase error.

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