Hi Dmitry, sure this is still possible. If you want you can think of the FluidMatrixInteraction as a collection of MaterialLawParams only that these “params” now additionally have functions like sw(pc). So they are the (parametrized) “law”. Instead of separating parameters and (stateless) functions there are now in one class with state. So, if you want a law parametrized with different parameters, you construct a new law with new parameters (within the SpatialParams::fluidMatrixInteraction function).
Hope this helps Timo > 5. sep. 2021 kl. 00:41 skrev Dmitry Pavlov <[email protected]>: > > Hello, > > I have a 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 > > > _______________________________________________ > DuMux mailing list > [email protected] > https://listserv.uni-stuttgart.de/mailman/listinfo/dumux
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