I'm trying to find pressure drop across a valve but I can't seem to figure out how to properly implement the no-slip condition on the walls. I inserted a new boundary condition, selected the walls, and selected Real Wall. This should mean the velocity at the wall is zero correct? When I look at a cut out of the velocity of the flow, I do not see the velocity stagnant on the wall. Or I don't even see a progression of flow velocity speed away from the wall. Can anyone help with this or know what's going on?