EXPERIMENTAL STUDY AND NUMERICAL SIMULATION OF THE AIR PERMEABILITY OF SYSTEMS OF WOVEN MACROSTRUCTURES

The transfer of air through systems of two woven macrostructure is studied experimentally and numerically. The influence of the  properties of the layers, the array of the layering and the angle between the layers are analyzed from the point of view of the air  permeability of the system. Results from the 3D simulation of the air permeability in through-thickness direction of systems of two  consecutive woven macrostructures are also presented. An approach, based on modelling of the woven macrostructure as a jet system, is  used to numerically predict the air transfer. Control volume method, Reynolds Averaged Navier-Stokes equations and Fluent CFD  software package are applied for the simulation. The numerical results are compared with the experiments and the verification shows  that the method can be successfully applied for simulation of the air transfer through multilayer systems.