A more interesting example is produced by decreasing the gravitational acceleration in the above example from unity to 0.4548. In this case, the bore transition is turbulent and involves a water elevation change from 1.0 to 2.8. Fluid configurations and velocity fields at selected times, showing the development of the bore, are shown in Fig. 9. In this case the computational mesh consisted of 50 equally spaced cells in the x-direction (8x = 0.25) and 20 cells with variable spacing in the y-direction. The variable spacing was chosen to give finer resolution around y = 1.0, where a shear layer is formed as the incoming water flows into the bore front.