ISIS Quick Start Guide - Halcrow

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ISISQuick Start GuideFigure 6. Profile of the cross section 2.12 of the model in the TIDAL.DAT file7) Run the simulation. Click the ‘flow simulation’ icon or select > Run > Flow simulation. A flowsimulation run form interface will appear as shown by Figure 7.Figure 7. The interface for running the model in the TIDAL.DAT fileSelect the Unsteady (Fixed Timestep) button, set the “Finish time” to 36 hours and set both the“Timestep” and “Save interval” to 360 seconds. Click Run. Click “Exit” after the simulation completes(see Figure 8) and “Close” the run model scenario dialog without saving Scenario data (Figure 7).Do you have any questions or remarks? Please contact ISIS support at isis@halcrow.comor on 0845 094 7994 (+44 1793 845733 from outside the UK) www.halcrow.com/isis8
ISISQuick Start GuideFigure 8. The ISIS window showing the completion of unsteady simulation runof the model in the TIDAL.DAT file8) View the results. First let’s view the water level time series at one of the river sections. It should bea tide graph similar (but not identical) to the one of the downstream boundary condition shown byFigure 5. To do this, right click one of the river sections (for example section 2.26) and select timeseries and click ‘Plot’. The water level result at this section will be plotted. It is shown by Figure 9.Figure 9. Time series plot for one of the river sections of the model in the TIDAL.DAT fileUsing the ability of ISIS to animate the results we can watch a dynamic animation of the changes ofthe water level with time on the longitudinal profile of the river. To do this we have to plot the longsection of the river (the way to plot this are explained in step 4 of this Chapter), right mouse clickinside the long section and click ‘animation’, then click the “Play” button ( )on the animation toolbarat the top of the screen. The simulation results of the model in TIDAL.DAT will be animated.Figures 10 to 14 illustrate the changes of the water level in the river represented in the file TIDAL.DATin the course of the simulation described earlier. You can see that the changes of the tidal cycle alongthe river.Do you have any questions or remarks? Please contact ISIS support at isis@halcrow.comor on 0845 094 7994 (+44 1793 845733 from outside the UK) www.halcrow.com/isis9
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ISIS Quick Start Guide - Halcrow

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