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Microscopic Analysis of Flow and Prediction of Effective Permeability for Dual-Scale Porous Fiber Fabrics

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Abstract:

In this paper, the permeability of fiber fabric used in liquid composite molding (LCM) is predicted by the method of numerical simulation. The three-dimensional finite element model of unit cell representing the periodic micro-structure of a plaid is established. In the process of numerical simulation, each fiber bundle in unit cell is treated as a porous medium. Stokes equation and Darcy's law are employed to model the saturated flow between the fiber bundles and the saturated flow in the fiber bundle, respectively. Steady state flow of the finite element model of unit cell is simulated. The effective permeability of the plaid is obtained from the postprocessing of the simulation results by using Darcy's law.

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Periodical:

Advanced Materials Research (Volumes 97-101)

Pages:

1776-1781

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.97-101.1776

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Cite this paper

Online since:

March 2010

Authors:

Shi Lin Yan, Hang Lu, Hua Tan, Zhong Qi Qiu

Keywords:

Liquid Composite Molding (LCM), Numerical Simulation, Permeability, Unit Cell

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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