Add: non-ideal Equations of State (EoS)

[AlbertoCuadra]

• Elaborate a small database with the critical temperature, critical pressure and acentric factor for pure components (species).
• Include automatically this data in the DB of the variable self
• Compute atraction and repulsion parameters for pure components
• Compute atraction and repulsion parameters for mixtures considering Van der Waals mixing rules and neglecting the Binary Interaction Parameter (BIP)
• Obtain molar volume for Van der Waals EoS
• Obtain molar volume for Peng-Robinson EoS
• Solve cubic EoS using a Newton-Raphson method
• Solve cubic EoS with the function roots
• Compute compressibility factor, Z
• Check results of Z for different pure components with the literature
• Check results of Z for different mixtures with the literature
• Compute dimensionless chemical potential excess, muRT_excess
• Include muRT_excess in the the total dimensionless chemical potential of the system
• Compute derivative of muRT_excess and include it in the matrix coefficients of the Newton-Raphson method
• Include non-ideal contributions in the thermodynamic properties, i.e., enthalpy, internal energy, specific heat at constant pressure and at constant volume, entropy, adibatic index, sound velocity.

[AlbertoCuadra]