  We introduce a mesoscale approach for the simulation of multicomponent flows
to model the direct-writing printing process, along with the early stage of ink
deposition. As an application scenario, alginate solutions at different
concentrations are numerically investigated alongside processing parameters,
such as apparent viscosity, extrusion rate, and print head velocity. The
present approach offers useful insights on the ink rheological effects upon
printed products, susceptible to geometric accuracy and shear stress, by
manufacturing processes such as the direct-writing printing for complex
photonic circuitry, bio-scaffold fabrication, and tissue engineering.
