<%namespace name="tools" file="tools.tex"/>

This test was set up to verify the capability of XBeach to model tidal elevation and longshore currents in a small model, based on water level time series at the seaward corner points, which have a small time shift. The current pattern should spin up in a longshore uniform pattern and remain longshore uniform at all times. In the figure velocity patterns at six times during a one-day simulation are shown. Also the input timeseries of water levels at the corners (dots) can be compared with the model water 
level time series, which should closely follow the input but may have a small delay depending on the type of boundary condition chosen (abs\_1d, abs\_2d or waterlevel) and on settings of epsi (-1 in this case) and cats (5). In this case without wave forcing, the abs\_2d boundary type does not perform well; water levels do not match the input. This is probably due to the absence of waves. With abs\_1d the results as in the reference figure are shown.

${tools.image('tideonly/default/', 'tide.eps', 'The lower-left panel shows the tidal timeseries imposed to the offshore corners of the model (dots) and the generated waterlevels at these locations (lines). For six moments indicated with the black vertical lines, the flow field is shown in the upper panels.')}
