In a wide variety of applications, the stress tensor τ τ is given as a linear function of the gradient ∇ ∇ u . Such a choice for τ τ has been proven to be sufficient for describing the dynamics of a broad range of fluids. However, its use for more complex fluids such as polymers is dubious. In such a case, it may be necessary to use multiscale modeling to accurately model the system such that the stress tensor can be extracted without requiring the computational cost of a full microscale simulation.