ESTUDIOS DE FLUJOS MULTIFÁSICOS EN MEDIOS POROSOS

Abstract

In this work, the fractal dynamics of interfaces growth in non-equilibrium porous media is studied just for one kind of paper as a model of the fractal media. The contribution in this field of knowledge is the analysis of processes of interface growth, namely wetting (imbibition), taking into account the percentage of humidity. The experiments of imbibition were carried out at least 70 times. Just one size of sample was used to all the experiments. Likewise, the growth, formation and dynamics of the fluid interfaces as a function of time and humidity in porous media by using filter paper of opened porous, are presented. The analysis was achieved with experimental test data. These tests were carried out with rectangular paper specimens of (40 x 20) cm, the fluid was made of water and China ink in relation 3:1 with an initial humidity that varies with respect to environmental conditions until the capillarity, gravity and the evaporation of the fluid are in balance. Breaking down the previous balance with the increasing of the moisture, we have managed to the interface grow again and over time these parameters were balanced obtaining the imbibition. The interface behaviors in porous media were captured through photos, taken with a high resolution digital camera. As Preliminary result were obtained the characterization of the interfaces areas growth, with help of image files converted into binary files. These files were processed in MatLab software in order to apply the fractal theory, analyzing and evaluating the necessary parameters to obtain final results in this research.