permeable baffle
 

hi folks,

with interFoam, I need a baffle which lets everything through (incl. water) but keeps a certain velocity.
i think baffles can be cyclic, wall or patch.
which of those shall i choose? What boundary condition would i choose for example for alpha.water?


my favourite approach is using patch, then in U using permeableAlphaPressureInletOutletVelocity.
However. For alpha.water i chose zerogradient for the baffle. It did not really work. the water did not ger through.




Help please!!