| A hydrodynamic and sediment transport model for nearshore coastal regions is developed in this study. The depth-integrated Boussinesq model is used to provide hydrodynamic information, advection-diffusion of sediment is used to describe suspended sediment transport. A new depth-integrated suspended sediment concentration model, which treats sediment entrainment and deposition as independent processes, is developed. Then, a third order numerical scheme (both for time and space), which can be effectively used in the oscillatory flow environment, is implemented by using the QUICKEST finite difference scheme. The capability of the Boussinesq wave model used for flow velocity and sediment transport prediction is investigated. The model is validated using measurement data from the SUPERTANK Laboratory Data Collection Project. The new model represents an attempt to change the approach of treating the near bottom sediment boundary condition from the traditional reference concentration concept to the pickup function concept. The latter is more suitable for the oscillatory flow environment. Further research is also addressed in detail in order to improve this new model. |
