Reply To: Is multiphase necessary for combustion with liquid propellants?

[Rob]

If the injected material is a liquid it'll need to evaporate to then burn, so you will need a multiphase model with phase change to handle this part of the set up. You'd then need species models on the gas side to handle the reaction and both reactants and product species.  Note, this will not be a trivial calculation as if you don't get the phase change working well there won't be anything to react.