Fibre orientation near a wall of a headbox.
2010 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, Vol. 25, 204-212 p.Article in journal (Refereed) Published
Experimental results on the fibre orientation in a laboratory scale headbox are reported. A steerable filter was used to determine the orientation of bleached unbeaten birch fibres at different distances from one of the inclined walls of the headbox contraction. Due to optical limitations only dilute suspensions were studied. It is shown that the fibre orientation distribution varies with the distance from the wall. Sufficiently far upstream in the headbox a more anisotropic distribution is found closer to the wall as compared to farther away from the wall.
Place, publisher, year, edition, pages
2010. Vol. 25, 204-212 p.
Fibre suspension; Orientation; Anisotropy; Shear flow; Boundary layer; Headbox
IdentifiersURN: urn:nbn:se:kth:diva-10001ISI: 000279341100009OAI: oai:DiVA.org:kth-10001DiVA: diva2:200921
Uppdaterad från konferensbidrag till artikel 20100706
QC 201007062009-03-022009-03-022010-12-17Bibliographically approved