섬유

study on air permeability of fiber assemblies oriented unidirectionally

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 314
the relation between the air permeability k of fiber assemblies unidirectionally oriented at high porosity $epsilon$ was studied by applying the darcy law to one-dimensional air flow. experiments were performed with cotton fibers and polyester fibers in the porosity region of 96. 0-99. 9 when fiber-axes are parallel and perpendicular to air flow, and it was found that: k $equals$ r $epsilon$ **3/(1- $epsilon$ )** $beta$ where r and $beta$ are experimental constants depending on the kinds of fibers, fiber orientation and air flow direction. the result does not agree well with the kozeny-carman law, but shows good agreement with the lord's results obtained for cotton fiber assemblies in the porosity region of 96-99. 4 refs
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