New question #702534 on Yade:
https://answers.launchpad.net/yade/+question/702534

Hey guys,

I have a problem where my soil has all boundary conditions blocked from air 
intake except the top.

Initially the sample is saturated, loses water from the top and shrinks along 
time.

I have some experience with 2PFV, but I don't know if it would be possible to 
reproduce these boundary conditions in the current code.

My question is: would be possible to set in the top boundary pressure zero (to 
allow air intake) and negative pressure (to promote water suction). For this I 
would use some faces of the triangulation to be negative pressure and some 
other to be pressure. But how to figure out the water reservoir position.

Anyway, I may be using the wrong approach. But if you see any possibility, let 
me know.
Kind regards,
Luis

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