eos

MatLab codes for the Peng-Robinson equation of state.

The main functions are as follows.

(1) Calculate z-factor and fugacity cofficients for pure component systems.

fugcoef_purecomp.m : return the z-factor which minimizes the gibbs free energy if multiple roots are found.
fugcoef_purecomp_liquid.m : return the minimum z-factor if multiple roots are found.
fugcoef_purecomp_vapor.m: return the maximum z-factor if multiple roots are found.

(2) Calculate z-factor and fugacity cofficients for multi-component systems.

fugcoef_multicomp.m : return the z-factor which minimizes the gibbs free energy if multiple roots are found.
fugcoef_multicomp_liquid.m : return the minimum z-factor if multiple roots are found.
fugcoef_multicomp_vapor.m: return the maximum z-factor if multiple roots are found.

(3) Calculate Bubble point pressure.

pressbub_purecomp_ss.m : For pure component systems. Successive substitution method is used.
pressbub_purecomp_newton.m : For pure component systems. Newton method is used.
pressbub_multicomp.m : For multi-component systems. Successive substitution method is used.

(4) Calculate Dew point pressure.

pressdew_multicomp.m : For multi-component systems. Successive substitution method is used.

Name		Name	Last commit message	Last commit date
Latest commit History 54 Commits
.gitignore		.gitignore
README.md		README.md
calcab_multicomp.m		calcab_multicomp.m
calcab_purecomp.m		calcab_purecomp.m
calcabmix.m		calcabmix.m
calcfugcoef_multicomp.m		calcfugcoef_multicomp.m
calcfugcoef_purecomp.m		calcfugcoef_purecomp.m
calczfactor.m		calczfactor.m
demo_fugacitycoef.m		demo_fugacitycoef.m
demo_phasefraction.m		demo_phasefraction.m
demo_pressbub.m		demo_pressbub.m
demo_tpdss.m		demo_tpdss.m
demo_vaporliquideq.m		demo_vaporliquideq.m
fugacitycoef_multicomp.m		fugacitycoef_multicomp.m
fugacitycoef_multicomp_liquid.m		fugacitycoef_multicomp_liquid.m
fugacitycoef_multicomp_vapor.m		fugacitycoef_multicomp_vapor.m
fugacitycoef_purecomp.m		fugacitycoef_purecomp.m
fugacitycoef_purecomp_liquid.m		fugacitycoef_purecomp_liquid.m
fugacitycoef_purecomp_vapor.m		fugacitycoef_purecomp_vapor.m
molardensity.m		molardensity.m
molarvolume.m		molarvolume.m
phasefraction.m		phasefraction.m
pressbub_multicomp_newton.m		pressbub_multicomp_newton.m
pressbub_multicomp_ss.m		pressbub_multicomp_ss.m
pressbub_purecomp_newton.m		pressbub_purecomp_newton.m
pressbub_purecomp_ss.m		pressbub_purecomp_ss.m
pressbubest_multicomp.m		pressbubest_multicomp.m
pressbubest_purecomp.m		pressbubest_purecomp.m
pressdew_multicomp_newton.m		pressdew_multicomp_newton.m
pressdew_multicomp_ss.m		pressdew_multicomp_ss.m
pressdewest_multicomp.m		pressdewest_multicomp.m
tpdss.m		tpdss.m
vaporliquideq.m		vaporliquideq.m
wilsoneq.m		wilsoneq.m

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