When using an own RGP file to define a real gas / wet steam material for use in a CFX simulation, and the material is assigned to the material group “User” only, the solver crashes in the 1st iteration with unphysical values for enthalpies, temperatures and other variables.
January 25, 2023 at 7:17 amFAQParticipant
One possible reason is the wrong setting of the thermodynamic state of the real gas material. For dry real gas or the vapor component of a dry/wet homogeneous binary mixture real gas, the parameter “Thermodynamic State” must explicitly be set to “Gas”, because otherwise the solver assumes the state to be a “Liquid”, and only the liquid properties of the RGP table are used.
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