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On the effects of fiber orientation in permeability of fibrous media to power-law fluids

机译：纤维取向对纤维介质对幂律流体渗透性的影响

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摘要

In this note, for the first time, the flow of power-law fluids is numerically simulated in 3-D fibrous structures resembling the internal microstructure of fibrous hygiene products to study the effects of fibers' in-plane and through-plane orientations on the media's permeability. It was found that while the permeability of a fibrous material to a power-law fluid hardly depends on the in-plane orientation of the fibers, it increases with increasing the fibers' through-plane orientation. Moreover, we developed a simple analytical expression that can be used together with the empirical correlation of Davies (1973) [16 ], modified with an equation derived by Banks (1987) [17], to predict the permeability of anisotropic fibrous media to power-law non-Newtonian fluids. The predictions of our formulation are compared with our numerical simulations and good agreement is observed.
机译：在本说明中，这是首次在类似于纤维卫生产品内部微观结构的3-D纤维结构中对幂律流体的流动进行了数值模拟，以研究纤维的面内和平面方向对纤维的影响。介质的渗透性。已经发现，尽管纤维材料对幂律流体的渗透性几乎不取决于纤维的平面内取向，但是其随着纤维的贯穿面取向的增加而增加。此外，我们开发了一个简单的分析表达式，可以与Davies（1973）[16]的经验相关性一起使用，并用Banks（1987）[17]导出的方程进行修正，以预测各向异性纤维介质对功率的渗透性。律非牛顿流体。将我们配方的预测与我们的数值模拟进行比较，并观察到良好的一致性。

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  • 作者

    B. Emami; S. Fotovati; M.M. Amrei; H. Vahedi Tafreshi;

  • 作者单位

    Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284-3015, United States;

    Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284-3015, United States;

    Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284-3015, United States;

    Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284-3015, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    filtration; non-newtonian fluids; transport processes; porous media; fibrous media; nonwoven materials;

    机译：过滤;非牛顿流体;运输过程;多孔介质纤维介质无纺布材料;

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