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On fibre suspension flow modelling: mechancal fibre flocculation and fibre orientation
KTH, School of Engineering Sciences (SCI), Mechanics.
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH , 2005. , 19 p.
Series
Trita-MEK, ISSN 0348-467X ; 2005:5
Keyword [en]
Engineering physics
Keyword [sv]
Teknisk fysik
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:kth:diva-344OAI: oai:DiVA.org:kth-344DiVA: diva2:9239
Presentation
2005-04-11, Sal L1, Drottning Kristinas väg 30, Stockholm, 10:15
Supervisors
Note
QC 20101202Available from: 2005-08-01 Created: 2005-08-01 Last updated: 2010-12-02Bibliographically approved
List of papers
1. Turbulent Dilute Fibre Suspension Flow Modelling In a Sudden Circular Pipe Enlargement
Open this publication in new window or tab >>Turbulent Dilute Fibre Suspension Flow Modelling In a Sudden Circular Pipe Enlargement
2003 (English)In: 89th PAPTAC Annual Meeting, Montreal, 2003Conference paper, Published paper (Other academic)
National Category
Other Engineering and Technologies
Identifiers
urn:nbn:se:kth:diva-26992 (URN)
Note
QC 20101201Available from: 2010-12-01 Created: 2010-12-01 Last updated: 2010-12-02Bibliographically approved
2. A numerical study on mechanical fibre flocculation in a planar contraction
Open this publication in new window or tab >>A numerical study on mechanical fibre flocculation in a planar contraction
(English)Manuscript (preprint) (Other academic)
National Category
Other Engineering and Technologies
Identifiers
urn:nbn:se:kth:diva-26995 (URN)
Note
QC 20101201Available from: 2010-12-01 Created: 2010-12-01 Last updated: 2010-12-02Bibliographically approved
3. Modelling the Fibre Anisotropy Profile in Shear Layers Leaving a Planar Contraction
Open this publication in new window or tab >>Modelling the Fibre Anisotropy Profile in Shear Layers Leaving a Planar Contraction
2010 (English)In: Paper Conference and Trade Show 2010, PaperCon 2010: Volume 3, 2010, 2320-2353 p.Conference paper, Published paper (Refereed)
Abstract [en]

The fibre orientation state evolution is evaluated by the fully 3D convection-dispersion equation, i.e. the Fokker-Planck equation. This is solved along various streamlines in the contraction with vane inserts so that effects of wakes and boundary layers could be studied across a jet. As an input to the fibre orientation model the turbulent flow field is solved by Computational Fluid Dynamics (CFD) with second-order closure of the turbulence model. Parameter values for the rotational dispersion coefficient of three hypotheses reported in studies are tested for an independent experimental case. After the contraction the anisotropy profile across the flow, has a variation in anisotropy value in different regions, identified as the boundary layer, the undisturbed region and wakes. The numerical result predicts these regions by comparison to the experimental result with the fully 3D approach of the fibre orientation state applied.

Keyword
Convection-dispersion equations, Dispersion coefficient, Fibre orientation, Numerical results, Parameter values, Second-order closure, Shear layer, State evolutions
National Category
Other Materials Engineering
Identifiers
urn:nbn:se:kth:diva-8485 (URN)2-s2.0-78449244694 (Scopus ID)978-161738789-0 (ISBN)
Conference
Paper Conference and Trade Show 2010, PaperCon 2010; Atlanta, GA; United States; 2 May 2010 through 5 May 2010
Note

QC 20100812. Uppdaterad från submitted till konferensbidrag (20100812).

Available from: 2008-05-16 Created: 2008-05-16 Last updated: 2014-09-10Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
  • html
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  • asciidoc
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