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[Robert Caulk <question671365@xxxxxxxxxxxxxxxxxxxxx>]

Question #671365 on Yade changed:
https://answers.launchpad.net/yade/+question/671365

    Status: Open => Answered

Robert Caulk proposed the following answer:
Hello Azim,

1) Yes, you are imposing a gradient in the Y direction with your
commands.

2) Flow engine boundary condition assignments are designed to impose
"macroscopic hydraulic gradients" on cubical specimens. If you want to
use this hydraulic gradient to calibrate the macroscopic permeability of
your sample, you will want to adjust the permeability factor [1] and
estimate the corresponding macroscopic permeability.

3) In an attempt to keep this relevant to this thread - if you want to
see the hydraulic gradient in paraview, you will want to export
pressures with flow.saveVTK [2].

Cheers,

Robert

[1]https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.FlowEngineT.permeabilityFactor
[2]https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.FlowEngineT.saveVtk

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