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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Real gas models for Joule-Thomson effect › Reply To: Real gas models for Joule-Thomson effect

June 20, 2023 at 8:52 am
Rob
Forum Moderator

Real gas doesn't behave well around the phase change. You're generally safer with a multiphase model to handle the phase change. Unless you really need real gas I'd always favour ideal gas + phase change: note I don't tend to model much in this application area so can't comment in great detail (I'm also limited by the forum rules). 

I'm a little surprised the model ran with that mesh, you're going to need a lot more cells to pick up the boundary layer effects and all the other fun stuff when real gases start flowing.Â