Non-affine motion and selection of slip coefficient in constitutive modeling of polymeric solutions using a mixed derivative

Constitutive models for the dynamics of polymer solutions traditionally rely on closure relations extra stress or related microstructural variables (e.g., conformation tensor) linking them to flow history. In this work, we study eigendynamics tensor within GENERIC framework in mesoscopic computer simulations separate effects nonaffine motion from other sources non-Newtonian behavior. We observe that slip increases with both concentration and chain length. Our analysis allows uniquely calibrate a mixed derivative Gordon–Schowalter type macroscopic based micro-macromapping polymeric system. The presented approach paves way better constitutive modeling multiscale solutions, where different behavior are modelled independently.