A simplified three-dimensional structural model for a series of nonwoven fabrics is presented. The corresponding directional permeabilities of the fabrics are calculated based on the measured two-dimensional fiber orientation distribution. The influences of fiber diameter, fabric porosity, and fiber orientation distribution on the directional permeabili ties are considered.
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References
1.
Carman, P.C., "Flow of Gases through Porous Media," Academic Press , NY, 1956.
2.
Collins, R.E., "Flow of Fluids through Porous Materials," Reinhold , NY, 1961.
3.
Cox, R.G., TheMotion of Long Slender Bodies in a Viscous Fluid, Part 1, J. Fluid Mech.44, 791-810 (1970).
4.
D'Arcy, H., "Les Fontaines Publiques de la Ville de Dijon," Dalmont, Paris, 1856.
5.
Gong, R.H., and Newton, A., ImageAnalysis Techniques, II: The Measurement of Fiber Orientation in Nonwoven Fabrics, J. Textile Inst.87, 371 (1996).
6.
Happel, J., Viscous Flow Relative to Arrays of Cylinders, J. Am. Inst. Chem. Eng.5, 174-177 (1959).
7.
Happel, J., and Brenner, H., "Low Reynolds Number Hydrodynamics," Noordhoft International Publishing, Leyden, The Netherlands.
8.
Iberall, A.S. , Permeability of Glass Wool and Other Highly Porous Media, J. Res. Nat. Bur Stand. 45, 398-406 ( 1950).
9.
Kozeny, J., "Proceedings of the Royal Academy of Science," Vienna, Proc. Class1, 136, 1927, p. 271.
10.
Kuwabara, S.J. , TheForces Experienced by Randomly Distributed Parallel Circular Cylinder or Spheres in a Viscous Flow at Small Reynolds Numbers, J. Phys. Soc. Jpn.14, 527-532 (1959).
11.
Krcma, R., "Manual of Nonwovens," Textile Trade Press, Manchester, England, 1971.
12.
Mao, N., Effect of Fabric Structure on the Liquid Transport Characteristics of Nonwoven Wound Dressings, Doctoral thesis, University of Leeds, 2000.
13.
Mao, N., and Russell, S.J., Directional Permeability of Homogeneous Anisotropic Fibrous Material, Part I, J. Textile Inst.91, 235-243 (2000).
14.
Mao, N., and Russell, S.J., Direct ional Permeability of Homogeneous Anisotropic Fibrous Material, Part 2, J. Textile Inst.91, 243-258 (2000).
15.
Sangani, A.S. , and Acrivos, A., Slow Flow Past Periodic Arrays of Cylinders with Applicati ns to Heat Transfer, Int. J. Multiphase Flow8, 193-2061982).
16.
Scheidegger, A.E., "The Physics of Flow through Porous Media ," University of Toronto Press, Canada, 1974.
17.
Sullivan, R.R. , and Hertel, K.L., Flow of Air Through Porous Media , J. App. Phys.11, 761-765 (1940).
18.
Wan, T.R., ImageAnalysis Techniques for the Study of Structural Characteristics of Fiber Assemblies in Top Manufacture, Doctoral thesis, Department of Textile Industries, University of Leeds, U.K., 1995.
19.
Wu, D.H. , Application of Image Analysis in Textiles , J. China Textile Inst. 3(6), 23 ( 1993).
