Injection molding is one of the most important
manufacturing processes for mass production of complex
plastic parts. In this study, mold filling is simulated by
using the OpenFOAM software for Non- isothermal
Newtonian fluid. The OpenFOAM is an open source
software that is used in Computational Fluid Dynamics
(CFD) tools. The studied mold shape has a rectangular
structure with a gate for Newtonian fluid injection. The
simulation carried out at non-isothermal conditions and
two-dimensional flow is considered. The velocity, shear
stress and temperature changes in different parts of the
mold are critically studied. We show that vortex
formation plays an important role on changes of shear
stress at the inlet of mold compared to regions far from
the inlet. The simulation results indicate that the
maximum velocity and maximum temperature decreases
along the mold length. Also, maximum velocity and
maximum temperature increases by increase of injection
rate.