im doing a simulation of liquid propulsion nozzle. its a unsteady compressible flow. flow mixture consists of water vapour and carbon di oxide. how can i give the material property for the mixture(i have their individual properties at various temperatures). wat boundary condition is necessary for this case other than the pressure at inlet and outlet.

anyone who is aware of this pls help ..

You need to define a mixture template in your materials panel. Define - Models -Species - Transport and Reaction - and pick Species Transport , Then go to materials and you should have access to a fluid mixture template, you will then be able to edit this for your particular mix. After this is setup then you will access in your pressure inlet boundary condition panel to specifiy the correct ratios of your mixture.