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[Zoheir Khademian <question695065@xxxxxxxxxxxxxxxxxxxxx>]

Question #695065 on Yade changed:
https://answers.launchpad.net/yade/+question/695065

Zoheir Khademian posted a new comment:
Hi Robert,

> TwoPhaseFlowEngine.minimumPorosity, that you are referencing, is part
of TwoPhaseFlowEngine, not ThermalEngine. So it will not change your
results.

The documentation says the minimumPorosity [1] is also included in the
flowEngine [2] and apparently it makes the model stable at the beginning
although after a while it gets unstable again.

- Thanks for the offer for including alpha boundary in the
ThermalEngine. I will get back to you on that.

 I should also clarify two points: 
- When I remove the bonds between my grains (clusters of spheres) and compact my sample in a cube, TH (thermo-hydro) analysis works just fine. I guess this is because the packing is normal (cubic) in this case and boundaries are pretty smooth due to the fact that clusters are dissembled and I am left with a packing of poly-disperse spheres instead of a packing of irregular-shaped, bonded grains.

- If I dont remove the bonds between my grains but still compact them in
a cube, the packing is normal but the TH analysis gets unstable. This
may be because the boundaries are not as smooth as the first case, owing
to the irregularity in the shape of my bonded grains. Solving this case
is what I am looking for.

Do you think alpha boundary can solve the issue in the second case?

Thanks for the help,


[1] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.FlowEngine.minimumPorosity

[2] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.FlowEngine

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