Name | TDE.Twu-Peng-Robinson. EOS |
---|---|
Name | |
Comment | PR-EOS with Twu alpha function and constant-term volume translation |
Variable VDN | Density |
Variable T | Temperature |
Variable P | Pressure |
Intermediate V | Molar volume |
Intermediate Z | Compressibility factor |
Parameter TC | Critical temperature |
Parameter PC | Critical pressure |
Parameter AF | Acentric factor |
Parameter L | |
Parameter M | |
Parameter N | |
Parameter VT | Volume translation |
Z = p×V/(R×T) Z = V/(V - b) - {a×α(T)×V}/{(R×T)×(V2 + 2×b×V - b2)}
a = (0.45724×(R×Tc)2)/pc
b = (0.0778×R×Tc)/pc
α(T) = TrN(M - 1)×exp{L(1 - TrN×M)}
Tr = T/Tc Physical molar volume is obtained from the Peng-Robinson volume by adding VT.