id:"swepub:oai:DiVA.org:kth-14889"
Search: id:"swepub:oai:DiVA.org:kth-14889" > A theoretical analy...
- 1 of 1
- Previous record
- Next record
- To hitlist
A theoretical analysis of the flow stability in roll forming of paper
-
- Holm, Richard (author)
- KTH,FaxénLaboratoriet,Mekanik
-
- Söderberg, L. Daniel (author)
- KTH,Mekanik
- (creator_code:org_t)
- 2005
- 2005
- English.
- In: Nordic Pulp & Paper Research Journal. - 0283-2631 .- 2000-0669. ; 20:2, s. 212-216
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- This paper deals with the fundamental mechanisms that control partial roll dewatering in papermaking. The flow around the forming cylinder is modelled in a cylindrical coordinate system and the wire is assumed to be impermeable. The governing equations are reduced based on a discussion where the magnitude of the different terms is estimated. Given this reduced set of equations a non-linear equation for the position of the wire is deduced. This clearly shows that one of the most important parameters is the Weber number, We, which is the non-dimensional number that can be obtained by comparing the effect of wire tension in relation to the momentum of the incoming headbox jet. The characteristics of the non-linear equation are discussed and the equation is linearized around the trivial solution to the equations, which gives that the wire is displaced a constant distance from the roll along the whole wrap. The linear equation has a standing wave solution with a specific wavelength that scales with We. This solution is compared to previously measured profiles regarding the wavelength of the waves.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Keyword
- papermaking
- forming
- roll dewatering
- mathematical modelling
- gap formers
- Engineering mechanics
- Teknisk mekanik
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Nordic Pulp & Paper Research Journal (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Holm, Richard
- Söderberg, L. Da ...
- About the subject
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Mechanical Engin ...
- Articles in the publication
- Nordic Pulp & Pa ...
- By the university
- Royal Institute of Technology
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
