Numerical investigation of the rheological behavior of a dense particle suspension in a biviscous matrix using a lubrication dynamics method

Arbitrary flow boundary conditions in smoothed dissipative particle dynamics: A generalized virtual rheometer

“…The flexibility to define both open and close boundaries offer opportunities to investigate transport process where both convective and diffusive transport across interfaces are of interest. These boundary conditions have applicability in a variety of problems where the rheological characterization require the modelling complex fluids under complex flow configurations, such as micro-nano devices 60 , protein dynamics 57 , biological flows, colloidal and particulate systems 35,61,62 , to name a few. Finally, given the direct resemblance of the domain decomposition adopted and those used for heterogeneous multiscale methods 45 , the proposed scheme opens new avenues for multiscale Lagrangian modelling, as it can be readily coupled with velocity fields derived from continuumbased methods.…”

A conservative lubrication dynamics method for the simulation of dense non-colloidal suspensions with particle spin

“…particles suspended in a non-Newtonian media, by adopting new equations of lubrication forces for shear-thinning and thickening liquids [21,22,23] which is the current focus of research.…”

“…The integration scheme is used to compute both the particle's linear and angular velocities implicitly. Moreover, the discrete model is constructed to fully respect the linear and angular momentum conservation properties and can be easily extended for simulating non-Brownian suspensions with non-Newtonian matrices [21,22,23]. On the flip side, the lack of explicit interaction with the solvent and far-field hydrodynamic interaction limits the accurate description to dense systems.…”

The strange case of shear-thinning in non-Brownian suspensions

“…Significant shearthinning can be re-established in non-Brownian suspensions, even for highly Newtonian matrices, provided that slip occur in vanishing interparticle gaps. From[23].…”