Classification of Models of Tidal Waters

A classification scheme is presented for numerical models of water and waste movement in tidal bays and estuaries. This classification is based on the number of spatial dimensions, the reference frame used, temporal resolution obtainable and the degree to which hydrodynamic processes are included. Newly developed models can easily be fitted into the scheme. With this classification scheme, different models may be assessed and compared on the basis of their theoretical assumptions. To select a model for a particular task, a sequence of questions may be answered and from the answers the appropriate type of model may be selected. The classification table then indicates the models available to meet the requirements of the particular physical situation.“