Fluent - species - density - UDF
I have two species (air + CO2) and I want to calculate the density of CO2 as it varies with temperature from the equation of state through a UDF. The density of the mixture is set as Incompressible Ideal Gas. I need the density of CO2 to calculate the ppm(volume) of CO2.
CO2 is assigned as species 0.
density0 = P * MW0 / (R_universal * T)
my question is, P here is the static pressure which I can call via C_P(c,t) or I need to do something with the operating pressure as well?