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OPM / LBPM

Pore scale modelling
https://lbpm-sim.org/
GNU General Public License v3.0
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Results Labels Interpretation #83

Open ahmedsrizk95 opened 10 months ago

ahmedsrizk95 commented 10 months ago

I was wondering what is the difference between krw and krwf also between krn and krnf in the timelog.csv results file?

Many thanks

JamesEMcClure commented 10 months ago

The difference is krnf "measures" the flow that is occurring in films, whereas krn accounts for all of the flow in the system. See void SubPhase::Basic() from https://github.com/OPM/LBPM/blob/master/analysis/SubPhase.cpp for the implementation. In this case, "films" are defined based on flow that occurs within 2 voxels of the solid surface, which is based on the interfacial thickness in the color model. In a well-resolved system we usually expect that flow in the films will be small compared to the overall flow.

In a typical situation krn, krw correspond to the quantities that you would care about for relative permeability.

ahmedsrizk95 commented 10 months ago

Thanks Dr. for your clarification. Can I also know what is the unit of the resulting permeabilities?