The fluid mechanics and heat transfer of injection mold filling of thermoplastic materials

For injection flow of thermoplastic material in thin cavities, with some minor restrictions, both pressure and stream function obey Laplace equations. An analytical‐numerical method, with a generalized viscous model used, is developed for determining the shape of a progressing flow front and for computing flow quantities and temperature distributions. Specifically, flows in a rectangular cavity are solved and compared to experiments.