water at free surface setting
 

hello, first of all, sorry for my english.

I need to model simple hydraulic works such as fish passage, spillways, channels.
Let me give you a few questions

1 - is there a way to set up only OpenFOAM for water at free surface and always use this type of condition by changing only the mesh and the boundary conditions?
If yes, there's already some setting that i can download? or a tutorial to follow to do this?

2-what software to manage modeling? for example:
helyx os, salome, paraview .... there are others? and what are they for?

my object is to have models of turbulence, gravity, type of fluid etc. .. that always used for all modeling and change only the mesh and boundary condition.

Any advice?