Computational interfacial rheology

Fluid–fluid interfaces, laden with polymers, particles or other surface-active moieties, often show a rheologically complex response to deformations, in particular when strong lateral interactions are present between these moieties. The of the interface can then no longer be described by an isotropic surface tension alone. These “structured” soft-matter interfaces found many industrial applications, ranging from foods, cosmetics and pharmaceuticals, oil recovery. Also biomedical applications involve such including those involving lung surfactants biofilms. In order understand, design optimize processes which structured present, flow predictions how multiphase systems deform utmost importance, is goal “computational interfacial rheology”, main topic this review. We start rigorously establishing stress boundary condition used computation multi-phase flows, changes complex. Then, constitutive models for extra 2D generalized Newtonian hyperelastic viscoelastic, reviewed extensively, common pitfalls applying models. This followed overview different approaches measure rheological properties, discussion advanced numerical implementations deforming interfaces. conclude outlook relatively young exciting field.