Flow Characteristics and Saline Wedge of the Density Flow in a Tidal River

Abstract

In order to catch the characteristic of the flow at saline wedge, the experiment for occurrence and flowing of saline wedge using a rectangular open channel was performed. Saline wedge is generally so stable that the visual observations are easy, and interfacial layers are measured with the aid of visualization method. As a result of the experiment, it was found that a saline wedge was reproduced well, and the form of tip of saline wedge changed by relative density and the amount of discharge on the upper reaches. It was also found that the thickness of the downstream freshwater depth was dependent upon the number of Richardson. The degrees of the dilution near the separation point could be displayed at the function with F_io in the density layer.