Added "dummy" water phase to compositional fluid system

[svenn-t]

The compositional fluid system is expanded to three phases where the water phase is a "dummy"/immiscible phase. Water phase properties are given through PVT functions the same way as in the black oil fluid system.

[GitPaean]

Thanks for the work. I will look into the PRs soon.

[GitPaean]

jenkins build this opm-simulators=5851 please

[svenn-t]

After discussion with @totto82 we agreed to have both two-phase and three-phase versions of the compositional fluid system. So I will make this and the opm-simulators PR drafts again and to make the necessary changes.

[GitPaean]

After discussion with @totto82 we agreed to have both two-phase and three-phase versions of the compositional fluid system. So I will make this and the opm-simulators PR drafts again and to make the necessary changes.

I agree and it is appreciated. And depending the testing example you have, you can create the flowexp_comp executable for that specific number of component only first.

Still thinking how to avoid too many exectubales to compile but it can be for later optimization.

[svenn-t]

I have updated this PR and OPM/opm-simulators#5851 to have both two- and three-phase versions of the compositional simulator. I did make new executables for two-phase versions of the simulators and they will be run if WATER is present in RUNSPEC.

[totto82]

jenkins build this opm-simulators=5851 please