Homogenized free surface flow in porous media for wet-out processing
Journal article, 2018

This paper presents a novel porous media model for homogenized free surface flow, representing wet-out composites processing. The model is derived from concepts of homogenization applied to a compressible two-phase flow, accounting for capillary effects and the concept of relative permeability. Based on mass balance considerations, we obtain a nonlinear set of equations of convection-diffusion type involving the mixture (fluid) pressure and the degree of saturation as primary fields. A staggered Galerkin finite element approach is employed to decouple the solution. Moreover, the streamline upwind/Petrov-Galerkin technique is applied to attenuate the oscillations in the saturation solutions. The model accuracy and convergence of the finite element solutions are demonstrated through 1-dimensional and 2-dimensional examples, representing resin transfer molding flow processes.

process modeling

free surface flow

resin transfer molding

porous media theory

partial saturation

Author

Da Wu

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Ragnar Larsson

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

International Journal for Numerical Methods in Engineering

0029-5981 (ISSN) 1097-0207 (eISSN)

Vol. 115 4 445-461

A shell theory based on two-phase porous media for process modeling of structural composites

Swedish Research Council (VR), 2014-01-01 -- 2017-12-31.

Subject Categories

Applied Mechanics

Computational Mathematics

Geometry

DOI

10.1002/nme.5812

More information

Latest update

7/2/2018 1