Remove UseComplexRelations
UseComplexRelations does different things for liquids and gases:
- !UseComplexRelations: for liquids the density of the mixture is assumed to be the density of the main component, for gases ideal gas mixture is assumed
- UseComplexRelations: for liquids the molar density of the mixture equals the molar density of the main component, for gases Dalton's law is assumed (for ideal gases this is the same as assuming ideal gas mixture)
We propose to remove UseComplexRelations and do:
for liquids: the molar density of the mixture equals the molar density of the main component (and the mass density is calculated accordingly using the composition) for gases: if all gases are ideal gases (isIdealGas) assume ideal gas mixture, otherwise use Dalton's law
Reference solutions for test cases that use !UseComplexRelations might need to be updated, all other tests should still work