NUMERICAL SIMULATION OF THE LIQUID COMPOSITE MOLD FILLING PROCESS WITH VOID FORMATION USING TWO-PHASE POROUS MEDIA THEORY

Autores UPV
Año
CONGRESO NUMERICAL SIMULATION OF THE LIQUID COMPOSITE MOLD FILLING PROCESS WITH VOID FORMATION USING TWO-PHASE POROUS MEDIA THEORY

Abstract

In order to minimize final void content in composite parts manufactured by Liquid Composites Molding (LCM) processes, the study of unsaturated flows in dual scale (microscopic pores between the filaments in the fiber tows and macroscopic pores between the tows) at the macroscopic level is becoming increasingly necessary. Even the continual progress made in the last decades, there still exist many unresolved issues and limitations with current numerical approaches. By one hand, modeling coupled flow (Darcy¿s law) and transport (saturation) in LCM processes with void formation remains a mathematical challenge and, by other one, the choice of higher order schemes for numerical simulation of the saturation in LCM processes is very important for effective simulations of the mold-filling process. In this work, we present a procedure to simulate the LCM filling process with void formation. To validate the proposed model, numerical predictions for the saturation were compared with experimental data obtained on a glass RTM mold under controlled manufacturing conditions.