急拡大部を有するスリット流路を通過する短繊維濃厚系分散流体中における短繊維の配向と濃度分布

概要

論文の詳細を見る
Distributions of fiber orientation and fiber concentration were measured in the flow of a concentrated fiber suspension (CFS) and a dilute one (DFS) through a slit channel with an abrupt expansion. An index-of-refraction matching method was employed in the measurements for the concentrated fiber suspension, and vinylon fibers used as tracers were observed between crossed polarizers which rotated at a high speed. For the CFS, the fibers rapidly orient in the direction perpendicular to the flow direction near the centerline just downstream from the expansion. Furthermore, the fiber concentration for the DFS shows a maximum near the channel wall, while that for the CFS monotonically increases from the wall toward the centerline. These distributions of fiber orientation and concentration for the CFS are supposed to the cause for fiber-fiber interactions.
社団法人日本機械学会の論文
2000-08-25