Hello,
I have confession to make. For quite some time, I have been using DuMux
3.3, refusing to upgrade because my code uses MaterialLawParams
extensively, and in DuMux 3.4 it is no longer available. I saw the
deprecation notice in 3.3, but was too busy/lazy to look into the
alternative.
Now I started to think about upgrade and... I do not know how to do with
FluidMatrixInteraction the things I have been doing with
MaterialLawParams. The changelog says: "A caller does not have to pass a
`parameters` object to the laws anymore". See, the necessity
(capability) to pass this object around allowed me to make by krw and
krn effectively depending not only on sw, but also on the concentration
of a component (surfactant), and on the pressure gradient.
I obtained the surfactant concentration and pressure gradient in
SpatialParams::materialLawParams, then used them to calculate the
capillary desaturation coefficients, and then wrapped them into the
returned instance of MaterialLawParams, which was later happily passed
to krw() and krn().
With DuMux 3.4 I see examples with different implementations of
FluidMatrixInteraction being used depending on position etc., but no
example where fluid variables other than sw affect the relative
permeability. Is this possible?
Regards,
Dmitry
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