Welcome to yaeos user documentation

yaeos is a Fortran library that handles thermodynamic Equations of State-based calculations, mostly phase-equilibria related ones and properties estimation ones.

This is a work-in-progress library (and documentation) so don’t hesisate to report any problem/requirement as an issue in our GitHub page.

Basic usage

The base object that represents most of yaeos functionality is the ArModel object, which holds the basic interface of how a $A_r$ model behaves.

Since all the properties that yaeos calculates are based on residual Helmholtz energy, once the object is set-up all the library functionality is available.

use yaeos

class(ArModel), allocatable :: model ! Variable that holds the model

! A setup function that returns a setted model
model = setup_model(<the properties that define a model>)

! Once the model is set up, the user has access to the properties
call pressure(model, V, T, P, dPdN=dPdN)