Communications on Hydraulic and Geotechnical Engineering: Particle Models forTransport in Three-Dimensional Shallow Water Flow

摘要

The present study-focuses on three-dimensional numerical modeling of transportprocesses in shallow water. For accurate modeling of complex geometries with free water surface, coordinate transformations are applied in the hydrodynamic model as well as in the transport model. Before examining transport simulation, the hydrodynamic model is described. The particle model has been described in detail. It deals with particle displacements in curved grids. Discrete flow data obtained by the hydrodynamic model are used consistently. The treatment of boundary and initial conditions are discussed. Accurate algorithms are presented for the computation of the advective and diffusive displacement.