Culverts

This issue was created automatically from an original CUE issue, opened by Agnes Leroy. Further discussion may take place here.

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The modelling of culverts (buses) and siphons is currently only possible in Telemac2D.
For now only culverts with a circular section can be represented.
Flanders hydraulics made new developments in Telemac3d to introduce a culvert model (same as in Delft3D) for rectangular/circular sections.

In order to integrate their developments there are some new variables to define in Telemac3D (NBUSE,...).
It is also necessary to improve what they've done in order to be able to have sources and culverts in the same simulation.

This is for V7P2.