Liquid composites molding is a high efficient

low cost and environment friendly process to manufacture composite part. In this paper

multi-scale resin flow numerical simulation model is established and the resin impregnation process of composite liquid molding process is studied by FEM method. The key parameter of permeability is predicted at the micro and meso scales and it is validated by the classical formula and the results in the literature. The results by numerical simulation are compared with the experimental ones. The results show that the approach and model established are of high fidelity with engineering applicability at the micro

meso and macro scales.