Plot results in Gid

Open the Gid post processing files in the usual way (see tutorial 1).

Plot the saturation in Gid

View results - Contour Fill - groundflow saturation

**Figure 10:** Groundwater saturation in dam
$\begin{figure}\centerline{\epsfig{file=tutorial_2/gid_post_groundflow_saturation.ps,width=12cm,angle=0}} \end{figure}$

From figure 10 is is clear that the lower part of the dam is saturated, whereas above the phreatic level the dam is non-saturated. In this calculation with group_groundflow_nonsaturated_vangenuchten the phreatic level follows automatically as a result of the calculation; this is opposed to most geotechnical calculations where there are only fully saturated zones below an a priori known phreatic level which is specified in the input file.

Plot the pore pressure in Gid

View results - Contour Fill - topres

**Figure 11:** Groundwater pore pressure in dam
$\begin{figure}\centerline{\epsfig{file=tutorial_2/gid_post_groundflow_topres.ps,width=12cm,angle=0}} \end{figure}$

Plot the groundflow velocity in Gid

View results - Vectors - groundflow velocity

**Figure 12:** Groundwater velocity in dam
$\begin{figure}\centerline{\epsfig{file=tutorial_2/gid_post_groundflow_velocity.ps,width=12cm,angle=0}} \end{figure}$

The vectors of groundflow velocity in figure 12 clearly show that the flux exits the dam at a relatively small part of the left edge. The highest node where groundwater starts to exit the dam is located at (6.98,3.81).

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