Modeling of Multiphase Systems: A Thermodynamic Approach

In this work, we propose a model that tracks the evolution of Internal energy, Volume, and Molar compositions in multiphase systems. The long-term objective of this research is to develop physics-based models for control analysis and design based on thermodynamics. The proposed modeling approach considers interface transport using a non-equilibrium thermodynamic perspective. It is shown that the proposed model predicts dynamical trajectories to thermodynamic equilibrium. Numerical simulations based on the model show the potential of a non-equilibrium approach to model open non-stationary multiphase systems.