A thermodynamically consistent pseudo-potential lattice Boltzmann model for multi-component, multiphase, partially miscible mixtures

Abstract Current multi-component, multiphase pseudo-potential lattice Boltzmann models have thermodynamic inconsistencies that prevent them to correctly predict the phase behavior of partially miscible multi-component fluids, such as hydrocarbon mixtures. This paper identifies these and attempts design a thermodynamically consistent model allows mass transfer across interfaces is capable typically The designed defines total interaction force for split into individual components. Through properly derived factor associated with volatility each component, can achieve precise consistency in mixtures, which described by iso-fugacity rule.