Numerical permeability measurements of a woven fabric preform for different clear-fluid and porous medium interface conditions

Numerical simulations are widely accepted for permeability measurements of fabric preforms used in liquidcomposite molding (LCM). The lack of research about interface conditions raises the question of the applicability andreliability of these conditions in the simulations of fluid flow through a porous medium. It is obvious that the wellknownNavier-Stokes equation can safely be applied to the clear-fluid region though, for the porous region it is not yetwell-established, what interface conditions can best accompany the Darcy and/or Brinkman governing equations.Hence, in this paper, these governing equations are employed, with some of the appropriate interface conditions tosignify the variations of permeability results due to different mathematical parameters in a validated numerical model.Commercial software COMSOL is used for our simulations, and permeability measurement results for differentinterface conditions are presented and discussed. The numerical and experimental results are also compared for awoven fabric preform.

کلیدواژه ها:

Composite manufacturing process ، Interface conditions ، LCM ، Permeability measurement