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Modeling of Industrial Printing and Nano-Jetting Spray Delivery

We built a computational environment to model two-phase microjetting in manufacturing and industrial devices. The code is a fully three-dimensional computational model simulating both Newtonian and Oldroyd-B viscoelastic fluids in two-phase immiscible incompressible flows with surface tension and both viscosity/density jumps across interfaces separating viscoelastic fluid from air. This model includes a contact model for air/wall/fluid interactions, and incorporates complex geometries. The model has been used to predict performance characteristics of inkjet industrial printers for use in manufacturing integrated circuits and micro-jetting devices.