A refined three-dimensional layer-integrated model of flows in estuarine and coastal waters

摘要

A refined three-dimensional layer-integrated model for predicting free surface flows in estuarine and coastal waters has been developed. Instead of using the depth-integrated equations for predicting the water elevation field, a set of equations derived by layer-integrating the continuity and momentum equations over the total water depth have been used to calculate the water elevation fields. The refined model was firstly used to calculate the wind-driven flow in a rectangular basin to verify the model performance. A comparison between the model predictions and an analytical solution for this simplified test case has been made, with identical results being obtained. The model was then applied to simulate tide-induced velocity profiles in an ideal harbour, with the experiments being undertaken in the Delft Tidal Flume at Delft Hydraulics. Reasonable agreement between the model predictions and experimental data was obtained.