Homogenized free surface flow in porous media for wet-out processing
Artikel i vetenskaplig tidskrift, 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

Författare

Da Wu

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Ragnar Larsson

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

International Journal for Numerical Methods in Engineering

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

Vol. 115 445-461

En skalteori baserad på tvåfas-kontinuum för processimulering av strukturella kompositer

Vetenskapsrådet (VR), 2014-01-01 -- 2017-12-31.

Ämneskategorier

Teknisk mekanik

Beräkningsmatematik

Geometri

DOI

10.1002/nme.5812