Abstract
Resin Transfer Molding (RTM) is one of the most widely known composite manufacturing technique of the liquid molding family, being extensively studied and used to obtain advanced composite materials comprised of fibers embedded in a thermoset polymer matrix. The fibrous reinforcement is considered a porous medium regarding its infiltration by the polymer resin. In this sense, this chapter aims to briefly discuss multiphase flow and heat transfer theory in RTM process, focusing on a multifluid model and the Control Volume/Finite Element (CV/FE) method. Finally, computational analysis was developed on the basis of ANSYS CFX® and PAM-RTM commercial software’s for the investigation of the fluid flow in RTM composite molding. In order to show the versatility and performance of the commercial codes, RTM experiments were carried under distinct injection pressure and fiber volume fraction conditions using plain-weave glass fiber cloth as the porous media. The transient numerical simulations provided information about volume fraction, pressure and velocity distribution of the phases (resin and air) inside the porous media.
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