Hi,

I am comparing Real Gas, Steam, Humidity in flow simulation. According to Solving Engineering Problems document:

“Real Gas” is quite distinct from the other types: using Redlich-Kwong state equation, best for “nearly-condensation temperatures and/or at nearly-critical and supercritical pressures, i.e. at conditions where the behavior of the gas can no longer be represented adequately by the ideal-gas state equation.”

I don’t find any essential difference between the two except that “steam” can describe the behavior of pure water. But rarely in any situations do we have “pure water” that is not accompanied by air. So what is actually the difference between “steam” and gas with humidity turned on?

Jerry