The purging of saline water from rectangular and trapezoidal cavities by an overflow of turbulent sweet water

The removal by turbulent convection of a denser, miscible liquid in an abrupt depression that forms a basin at the bottom of a watercourse by this flowing stream has been studied experimentally. Different cavity shapes were examined with various end wall slopes. The effect of these geometric features and the cavity aspect ratio can be summarized effectively by normalizing a non-dimensional purging velocity with the square of the densimetric Froude number.