Introducing nonlocal solid-fluid interactions into the Navier-Stokes-Korteweg model

Understanding how intermolecular forces govern nanoscale wetting and phase change requires tools that can link molecular and continuum scales. This work develops a continuum framework that integrates non-local solid-fluid interactions into the Navier-Stokes-Korteweg model, enabling the study of adsorption and thin film dynamics with thermodynamic consistency from the continuum level. By incorporating these interactions directly into the free energy, the model captures near-wall density reorganization and thin film stabilization during phase change, thus providing a consistent framework for examining nanoscale interfacial dynamics while maintaining a clear connection to molecular-level physics.