Estudo numérico da permeabilidade em meios porosos para RTM

Abstract

The present work belongs to the line of research of the Numerical Methods and Computational Mechanics and it consolidates on the numerical study of the problems of Shaping by Transfer of Resin, in portuguese, Moldagem por Transferência de Resina (RTM) in cases of one or two layers. It is presented a review of the literature about the application of composite materials and numerical methods, focusing specifficaly on the RTM problems, in which it is discussed the mathematical model and it is done the computational modeling of the cases to be studied. The numerical models for the cases proposed were validited in the software OpenFOAM from numerical x experimental comparisons and numerical xanalytical comparisons. It should be noted, that the experimetal data were extracted from the literature and they are in accordance with the problem studied in this work. It is also proposed the analysis of the influence of transverse permeability in problems of RTM of two layers. To obtain the values ofKzzit was used an iterative process in order to minimize the final time of injection. The numerical solutions obtained in this case were compared with experimental data found in the literature, this way the time of injection of the resin into the mold was minimized, it is noted that they had good agreement with the referential adopted that demonstrates the effectiveness of the technique developed.