Boundary element techniques for the infiltration of dual-scale porous media in the processing of composites materials
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Boundary Element Techniques are implemented in the simulation of the impregnation phenomenon of dual-scale porous media used in the processing of composites materials at both mesoscopic (filling of Representative Unitary Cells) and macroscopic scales (filling of cavities). Three kinds of problems are considered: 1) Simultaneous filling of channels and bundles to study the void formation in Representative Unitary Cells (RUC´s) at constant inlet pressure and constant inlet flow rate regimes, based on the Stokes-Darcy (S-D) and Stokes-Brinkman (S-B) formulations, 2) Filling of bundles considering fully filled channels, based on the Stokes-Darcy formulation, to study the dynamic evolution of voids (compression, motion, migration and splitting), to determine sink functions that account for the partial saturation effects and to analyse the influence of the saturation level on the effective unsaturated permeability, 3) Unidirectional filling of cavities considering the partial saturation effects ...
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