[robin781105]

Dear Expert:

I am the new users of this software, I got some problem that hoped someone could help me.

The Upper block is a channel with a hole in the MinY direction, I want water from the MinX flow through this structure then there may have the lateral weir flow over the MinY to the Downer block.

Question:

Between this two block, how can I set the boundary conditions at the interface?
My setting is to set "symmetry" to upper block's MinY and "continuative" to downer block's MaxY, but the water did't through the interface.

Hope someone could help me, thanks a lot.