Boudary condition settings

Hi,
I want to simulate a particle flow sepration process. Small particles flows through a channel, in front of which there is a baffle. Large particles will collide with the baffle and I want it disapper. Small particles will changes its direction with the fluid phase. Now I do not know how the set the wall boundary of the channel becasue it should be fluid cacuation region inner or outside the channel. Also how I can set the large partcles colliding with baffle disapper and how to count the large or small particles passing through the pressure out region.

To have a fluid region on both sides of the green channel, you need to make it thicker than one or two cells.

To have large particles disappear when they get in contact with the baffle, you will have to modify calc_collision_wall_mod.f and call DELETE_PARTICLE when a large particle overlaps the baffle. I have not tried so I cannot guarantee this works or this is the best way to do it.

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