Dual-scale modeling of porous fibrous materials

Dahua Shou, Jintu Fan, Lin Ye, Youhong Tang

Research output: Contribution to conferencePaper


Dual-scale flows in fiber-reinforced composites have great applications in science and industry. However, comparing with solid fibers, great complexities are introduced when micro-scale flow processes taking place simultaneously in both regions of inter- and intra- yarns. In this study, an analytical model is presented to predict the transverse permeability of the dual-scale fibrous materials. The proposed model is successfully verified by comparing with experimental results, numerical calculations and previous theoretical values, and its dependence on structural parameters such as porosity, fiber radius, packing configuration and cross-sectional shape is also discussed. A simple but effective semianalytical correlation, regarding the overall permeability as a sum of contributions from inter-yarn and intra-yarn flows, is put forth to give a rapid permeability estimate. The development of this model facilitates speeding design of required performances of dual-scale fibrous materials.

Original languageEnglish
Publication statusPublished - 1 Jan 2012
Externally publishedYes
Event2012 Spring Conference of the Fiber Society - St. Gallen, Switzerland
Duration: 23 May 201225 May 2012


Conference2012 Spring Conference of the Fiber Society
CitySt. Gallen

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    Shou, D., Fan, J., Ye, L., & Tang, Y. (2012). Dual-scale modeling of porous fibrous materials. Paper presented at 2012 Spring Conference of the Fiber Society, St. Gallen, Switzerland.