I would like to model a steam generator (hot gas in the tubes, tubes immersed in water). I have set up the 3D model in Gambit. I am comfortable with the heat transfer portion of Fluent. My problem is with multi phases. In Fluent, how do I describe the volume of water so that with the addition of heat energy it will flash to steam, giving me a steam flow at the outlet?

[thereader]

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