Efficient two-layer non-hydrostatic wave model with accurate dispersive behaviour

Abstract A 2-layer non-hydrostatic model with improved dispersive behaviour is presented. Due to the assumption of a constant pressure distribution in lower layer, without much additional computational time. comparison linear wave theory showed that this gives better result for dispersion relation and shoaling waves intermediate water. This means applicable shallow water depths (up relative kh equals 4), whereas 1-layer only (kh smaller than 1). Three laboratory experiments, including fringing reef barred beach, were used validate presented mode different hydrodynamic conditions. Based on these results, it can be concluded applied accurately simulate bulk height spectral properties. The low frequency height, setup particular second order statistics contain more scatter, but captured general trend. Furthermore, good results complex bathymetries