Treatment of properties of critical fluids
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When using software to simulate the properties of critical fluids, the simulation results often show that the density and thermal conductivity of the gas phase are higher than those of the liquid phase. Logically, when a medium is in a critical state, it should not be possible to distinguish between a gas phase and a liquid phase; therefore, in such cases I treat it as a liquid phase, but I feel this approach isn’t reliable. I would appreciate some guidance from those with more experience
It’s a supercritical fluid, right? There is only 1 critical point. For supercritical fluids, there is a pseudo-critical point at each pressure, at which the physical properties change rapidly