[pm-ff] Use 1padapter instead of phase index

Working with dumux!1112 (merged)

mentioned in merge request dumux!1112 (merged)

marked as a Work In Progress

ex_models_coupling_ff-pm: /home/kilian/Dumux/dumux/dumux/material/fluidstates/adapter.hh:108: Dumux::FluidStateAdapter::Scalar Dumux::FluidStateAdapter::partialPressure(int, int) const [with FluidState = Dumux::CompositionalFluidState, true>, Dumux::FluidSystems::H2OAirDefaultPolicy<>, false>, 1> >; AdapterPolicy = Dumux::FluidSystems::OnePAdapter, true>, Dumux::FluidSystems::H2OAirDefaultPolicy<>, false>, 1>::AdapterPolicy; Dumux::FluidStateAdapter::Scalar = double]: Assertion `FluidSystem::isGas(AdapterPolicy::phaseIdx(phaseIdx))' failed.

added 16 commits

• 370f9ac2...67551307 - 15 commits from branch feature/exercise-coupling
• 0623d4cd - [pm-ff] Use 1padapter instead of phase index

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unmarked as a Work In Progress

mentioned in commit a07b5b47

merged