TY - JOUR
ID - 9557
TI - Viscosity Calculation of Supercritical Gases Based on the Rainwater-Friend Theory and the Modified Enskog Theory
JO - Iranian Journal of Chemistry and Chemical Engineering
JA - IJCCE
LA - en
SN - 1021-9986
AU - Ghayeb, Yousef
AU - Najafi, Bijan
AU - Moeini, Vahid
AU - Parsafar, Gholam Abbas
AD - Department of Chemistry, Isfahan University f Technology, Isfahan, Zip Code 84154, I.R. Iran
Y1 - 2002
PY - 2002
VL - 21
IS - 2
SP - 74
EP - 79
KW - Co-volume
KW - Modified Enskog theory
KW - Rainwater-Friend theory
KW - Residual viscosity function
KW - Thermal pressure
KW - Viscosity
DO - 10.30492/ijcce.2002.9557
N2 - A new correlation function for the calculation of viscosity for five typical supercritical gases is presented using the rainwater-Friend and modified Enskog theory. It is shown that by using accurate value for the thermal pressure and co-volume in the modified Enskog theory, this correlation function is suitable for calculation of the viscosity of supercritical gases, without any density and temperature limitation. For this purpose, two new correlation functions for the calculation of the thermal pressure coefficient and co-volume are presented. It is also shown that the co-volume in the modified Enskog theory depends not only on temperature, but also on density. The accuracy of the calculated viscosity is about 1%, which is much better than the previous work. It is also shown that the modified Enskog theory can be extended to very high density-temperature ranges by choosing correct values for the thermal pressure and co-volume.
UR - https://ijcce.ac.ir/article_9557.html
L1 - https://ijcce.ac.ir/article_9557_cd44bf61f9db8df3096d6e8f4361ac31.pdf
ER -