Breakup of thin liquid films with viscous interfaces

Thin liquid films are ubiquitous in nature and have many practical applications. From biological to the curtain coating process, thin present both large small scales. Despite their importance, understanding stability of these remains a significant challenge due fluid–fluid interface that is free deform, affected by interfacial tension complex rheological behavior. Instabilities often caused van der Waals attractions, which can lead rupture layer. To investigate dynamics, numerical methods commonly used, such as asymptotic derivations lubrication theory or tracking methods. In this paper, we computational study breakup dynamics stationary sheet bounded passive gas with viscous interface, using arbitrary Lagrangian–Eulerian method Boussinesq–Scriven constitutive law model Our results demonstrate influenced surface rheology disjoining effects character delay breakup, leading more stable films.