One of the cubic equations of real gas state defining the Compressibility factor Z(p, T) as a function of fluid pressure p and fluid temperature T:
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where
Z | Compressibility factor | p_c | |
p | Fluid pressure | T_c | Сritical temperature |
T | Fluid temperature | p_r = p/p_c | Reduced pressure |
R | Gas constant | T_r = T/T_c | Reduced temperature |
\omega | Acentric factor | \{ \kappa_1, \, \kappa_2, \, \kappa_3 \} | fitting parameters |
Once compressibility Z-factor
Z(p, T) is known the fluid density
\rho can be calculated as:
(7) | \rho(p, T) = \frac{1}{Z(p,T)} \cdot \frac{M}{R} \cdot \frac{p}{T} |
where
See also
Natural Science / Physics / Thermodynamics / Equation of State / Real Gas EOS @model
[ Real Gas ]