Reply To: Turbulence in closed space
thanks for posting further information.
In paraview you can also open the geometry file located in the vtk folder, then visualize as points with colors corresponding to the material numbers.
Subsequently, slice the domain along the inlet section you want to observe closely.
If I understand correctly, in the second case you plotted, the program works as you want it to.
You could try to run the first case with different resolutions to isolate the issue further.
The indicator should be programmed with a buffer which depends on the meshsize, such that the nodes which you’d like to be declared as inlet or boundary are hit correctly.