Issue with defining inlet and outlet boundary conditions

[murali666]

I trying to simulate an open channel flow. I developed the flow domain in FreeCAD with bottom surface, side walls and a wall at the inlet. I also created water inside the channel using a box as shown in the image.

I am new to DualSPHysics. I am trying different options to create inlet boundary at the boundary of the water body as shown above.

If I try 3D Zone with MK with the details shown below, I am getting the error "Domain size of particles in direction X is not zero."

The bed level is located at 50mm and the bottom of the water box is at 51mm. Hence I provided 51mm is the bottom level of water.

If I try 3D Zone with box type with the following details. The simulation is terminating at "Initialising InOut..."

Please assist me on how to create inlet and outlet boundary conditions for the above mentioned open channel setup. If any tutorials available on how to provide inlet and outlet boundaries, that will of great help to me.